Sean O'Brien

Columbia · Grade: So

134 resultsTrack & Field2021–20265 first-place finishes

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Best marks in available results
Event / course	Mark	Meet	Date
100 Meters · OutdoorNJSIAA State Meet Of Champions · Jun 12	11.97a	NJSIAA State Meet Of Champions	June 12, 2024
100m Hurdles · 33" / 0.838m · OutdoorUnion County Championships · May 24	16.42a	Union County Championships	May 24, 2022
200 Meters · IndoorRutgers Holiday Classic · Dec 6	25.74a	Rutgers Holiday Classic	December 6, 2024
200 Meters · OutdoorIvy League Outdoor Track & Field Championships · May 16	24.72a	Ivy League Outdoor Track & Field Championships	May 16, 2026
300 Meters · IndoorLen Pietrewicz Invitational · Dec 28	42.93a	Len Pietrewicz Invitational	December 28, 2023
400 Meters · OutdoorBlue Devil Classic · Apr 20	58.70	Blue Devil Classic	April 20, 2024
55 Meter · IndoorThe Ocean Breeze Holiday Festival · Dec 27	7.43a	The Ocean Breeze Holiday Festival	December 27, 2022
55 Meters · IndoorNJSIAA Group 1 & 4 State Championships · Feb 17	7.23	NJSIAA Group 1 & 4 State Championships	February 17, 2024
55m Hurdles · 33" · IndoorEssex County Track Coaches Assn. Season Opener Invite · Dec 16	8.77a	Essex County Track Coaches Assn. Season Opener Invite	December 16, 2022
60 Meter · IndoorIvy League Championships · Mar 1	7.67a	Ivy League Championships	March 1, 2025
60m Hurdles · 33" / 0.838m · IndoorTCNJ Indoor Opener · Dec 6	8.92a	TCNJ Indoor Opener	December 6, 2025

Best marks from the meets included here. Cross Country bests are grouped by course and distance.

Date	Meet	Event	Pl	Mark	Gr
May 16	Ivy League Outdoor Track & Field ChampionshipsMay 16 · 200 Meters · Place 13 · ColumbiaColumbia	200 MetersRound P	13.	24.72a PBWind: 1.6	So
May 16	Ivy League Outdoor Track & Field ChampionshipsMay 16 · 100 Meters · Place 12 · ColumbiaColumbia	100 MetersRound P	12.	12.04aWind: 0.4	So
May 1	Larry Ellis InvitationalMay 1 · 200 Meters · ColumbiaColumbia	200 Meters	--	DNSWind: 2.2	So
May 1	Larry Ellis InvitationalMay 1 · 100 Meters · Place 13 · ColumbiaColumbia	100 Meters	13.	12.21aWind: -0.5	So
Apr 17	Virginia ChallengeApr 17 · 200 Meters · Place 9 · ColumbiaColumbia	200 Meters	9.	25.07aWind: 0.3	So
Apr 17	Virginia ChallengeApr 17 · 100 Meters · Place 26 · ColumbiaColumbia	100 MetersRound P	26.	11.98aWind: 1	So
Apr 11	Rutgers RelaysApr 11 · 200 Meters · Place 8 · ColumbiaColumbia	200 Meters	8.	25.27aWind: 2.5	So
Apr 11	Rutgers RelaysApr 11 · 100 Meters · Place 9 · ColumbiaColumbia	100 Meters	9.	12.11aWind: 1	So
Mar 21	USF Alumni InvitationalMar 21 · 200 Meters · Place 56 · ColumbiaColumbia	200 Meters	56.	24.93aWind: 0.6	So
Mar 21	USF Alumni InvitationalMar 21 · 100 Meters · Place 42 · ColumbiaColumbia	100 Meters	42.	12.22aWind: -0.1	So

Date	Meet	Event	Pl	Mark	Gr
Dec 6	TCNJ Indoor OpenerDec 6 · 60m Hurdles · Place 3 · ColumbiaColumbia	60m Hurdles33" / 0.838mRound P	3.	9.12a	So
Dec 6	TCNJ Indoor OpenerDec 6 · 60m Hurdles · Place 3 · ColumbiaColumbia	60m Hurdles33" / 0.838m	3.	8.92a PB	So
Dec 5	Armory Collegiate Distance CarnivalDec 5 · 60 Meter · ColumbiaColumbia	60 Meter	—	DNS	So
Mar 1	Ivy League ChampionshipsMar 1 · 60 Meter · Place 13 · ColumbiaColumbia	60 MeterRound P	13.	7.67a PB	Fr
Mar 1	Ivy League ChampionshipsMar 1 · 200 Meters · Place 16 · ColumbiaColumbia	200 MetersRound P	16.	25.90a	Fr
Feb 15	Kane InvitationalFeb 15 · 60m Hurdles · Place 10 · ColumbiaColumbia	60m Hurdles33" / 0.838mRound P	10.	9.24a	Fr
Feb 15	Kane InvitationalFeb 15 · 60 Meter · Place 3 · ColumbiaColumbia	60 MeterRound P	3.	7.79a	Fr
Feb 15	Kane InvitationalFeb 15 · 60 Meter · Place 3 · ColumbiaColumbia	60 Meter	3.	7.75a	Fr
Feb 15	Kane InvitationalFeb 15 · 200 Meters · ColumbiaColumbia	200 Meters	--	DNS	Fr
Jan 18	Columbia-Dartmouth-YaleJan 18 · 60m Hurdles · Place 6 · ColumbiaColumbia	60m Hurdles33" / 0.838mRound P	6.	9.42a	Fr
Jan 18	Columbia-Dartmouth-YaleJan 18 · 60m Hurdles · Place 6 · ColumbiaColumbia	60m Hurdles33" / 0.838m	6.	9.25a	Fr
Jan 18	Columbia-Dartmouth-YaleJan 18 · 60 Meter · Place 4 · ColumbiaColumbia	60 MeterRound P	4.	7.85a	Fr
Jan 18	Columbia-Dartmouth-YaleJan 18 · 60 Meter · Place 4 · ColumbiaColumbia	60 Meter	4.	7.78a	Fr
Jan 18	Columbia-Dartmouth-YaleJan 18 · 200 Meters · ColumbiaColumbia	200 Meters	—	DNS	Fr

Date	Meet	Event	Pl	Mark	Gr
May 9	Ivy League Outdoor Track & Field ChampionshipsMay 9 · 100 Meters · Place 14 · ColumbiaColumbia	100 MetersRound P	14.	12.01aWind: 1.2	Fr

Date	Meet	Event	Pl	Mark	Gr
Dec 6	Rutgers Holiday ClassicDec 6 · 60m Hurdles · Place 7 · ColumbiaColumbia	60m Hurdles33" / 0.838m	7.	9.18a	Fr
Dec 6	Rutgers Holiday ClassicDec 6 · 60 Meter · Place 10 · ColumbiaColumbia	60 MeterRound P	10.	7.88a	Fr
Dec 6	Rutgers Holiday ClassicDec 6 · 200 Meters · Place 3 · ColumbiaColumbia	200 Meters	3.	25.74a PB	Fr
Feb 17	NJSIAA Group 1 & 4 State ChampionshipsFeb 17 · 55 Meters · Place 3 · WestfieldWestfield	55 MetersRound P	3	7.30	12
Feb 17	NJSIAA Group 1 & 4 State ChampionshipsFeb 17 · 55 Meters · Place 1 · WestfieldWestfield	55 Meters	1	7.23 PB	12
Feb 17	NJSIAA Group 1 & 4 State ChampionshipsFeb 17 · 55 Meters · Place 3 · WestfieldWestfield	55 MetersRound P	3	7.30	12
Feb 17	NJSIAA Group 1 & 4 State ChampionshipsFeb 17 · 55 Meters · Place 1 · WestfieldWestfield	55 Meters	1	7.23	12
Feb 3	NJSIAA Sectional Championships - North 2 Group 1&4Feb 3 · 55 Meters · Place 5 · WestfieldWestfield	55 MetersRound P	5	7.52	12
Feb 3	NJSIAA Sectional Championships - North 2 Group 1&4Feb 3 · 55 Meters · Place 2 · WestfieldWestfield	55 Meters	2	7.39	12
Feb 3	NJSIAA Sectional Championships - North 2 Group 1&4Feb 3 · 55m Hurdles · Place 3 · WestfieldWestfield	55m HurdlesRound P	3	8.95	12
Feb 3	NJSIAA Sectional Championships - North 2 Group 1&4Feb 3 · 55m Hurdles · Place 6 · WestfieldWestfield	55m Hurdles	6	8.99	12
Feb 3	NJSIAA Sectional Championships - North 2 Group 1&4Feb 3 · 55 Meters · Place 5 · WestfieldWestfield	55 MetersRound P	5	7.52	12
Feb 3	NJSIAA Sectional Championships - North 2 Group 1&4Feb 3 · 55 Meters · Place 2 · WestfieldWestfield	55 Meters	2	7.39	12
Feb 3	NJSIAA Sectional Championships - North 2 Group 1&4Feb 3 · 55m Hurdles · Place 3 · WestfieldWestfield	55m HurdlesRound P	3	8.95	12
Feb 3	NJSIAA Sectional Championships - North 2 Group 1&4Feb 3 · 55m Hurdles · Place 6 · WestfieldWestfield	55m Hurdles	6	8.99	12
Jan 6	Merli InvitationalJan 6 · 55 Meters · Place 1 · WestfieldWestfield	55 MetersRound P	1	7.54	12
Jan 6	Merli InvitationalJan 6 · 55 Meters · Place 1 · WestfieldWestfield	55 Meters	1	7.42	12
Jan 6	Merli InvitationalJan 6 · 55m Hurdles · Place 4 · WestfieldWestfield	55m HurdlesRound P	4	9.18	12
Jan 6	Merli InvitationalJan 6 · 55m Hurdles · Place 3 · WestfieldWestfield	55m Hurdles	3	9.12	12

Date	Meet	Event	Pl	Mark	Gr
Jun 12	NJSIAA State Meet Of ChampionsJun 12 · 100 Meters · Place 7 · WestfieldWestfield	100 MetersRound P	7.	12.11aWind: -0.7	12
Jun 12	NJSIAA State Meet Of ChampionsJun 12 · 100 Meters · Place 7 · WestfieldWestfield	100 Meters	7.	11.97a PBWind: 1.3	12
Jun 7	NJSIAA Group 1-4 ChampionshipsJun 7 · 200 Meters · Place 2 · WestfieldWestfield	200 Meters	2	24.95	12
Jun 7	NJSIAA Group 1-4 ChampionshipsJun 7 · 100 Meters · Place 3 · WestfieldWestfield	100 Meters	3	12.05	12
Jun 7	NJSIAA Group 1-4 ChampionshipsJun 7 · 100 Meters · Place 3 · WestfieldWestfield	100 MetersRound P	3	12.03	12
May 31	NJSIAA Sectionals North 2 Groups 1 and 4May 31 · 100m Hurdles · Place 4 · WestfieldWestfield	100m HurdlesRound P	4	15.31	12
May 31	NJSIAA Sectionals North 2 Groups 1 and 4May 31 · 100m Hurdles · Place 4 · WestfieldWestfield	100m Hurdles	4	15.15	12
May 31	NJSIAA Sectionals North 2 Groups 1 and 4May 31 · 100 Meters · Place 2 · WestfieldWestfield	100 MetersRound P	2	12.13	12
May 31	NJSIAA Sectionals North 2 Groups 1 and 4May 31 · 100 Meters · Place 2 · WestfieldWestfield	100 Meters	2	12.21	12
May 31	NJSIAA Sectionals North 2 Groups 1 and 4May 31 · 200 Meters · Place 2 · WestfieldWestfield	200 Meters	2	25.17	12
May 31	NJSIAA Sectionals North 2 Groups 1 and 4May 31 · 100 Meters · Place 2 · WestfieldWestfield	100 MetersRound P	2	12.13	12
May 31	NJSIAA Sectionals North 2 Groups 1 and 4May 31 · 100 Meters · Place 2 · WestfieldWestfield	100 Meters	2	12.21	12
May 31	NJSIAA Sectionals North 2 Groups 1 and 4May 31 · 100m Hurdles · Place 4 · WestfieldWestfield	100m HurdlesRound P	4	15.31	12
May 31	NJSIAA Sectionals North 2 Groups 1 and 4May 31 · 100m Hurdles · Place 4 · WestfieldWestfield	100m Hurdles	4	15.15	12
May 31	NJSIAA Sectionals North 2 Groups 1 and 4May 31 · 200 Meters · Place 2 · WestfieldWestfield	200 Meters	2	25.17	12
May 21	Union County ChampionshipsMay 21 · 100m Hurdles · Place 3 · WestfieldWestfield	100m Hurdles	3	14.90	12
May 21	Union County ChampionshipsMay 21 · 100m Hurdles · Place 4 · WestfieldWestfield	100m HurdlesRound P	4	15.03	12
May 21	Union County ChampionshipsMay 21 · 100 Meters · Place 5 · WestfieldWestfield	100 Meters	5	12.15	12
May 21	Union County ChampionshipsMay 21 · 100 Meters · Place 5 · WestfieldWestfield	100 MetersRound P	5	12.06	12
May 9	Union County Conference ChampionshipMay 9 · 200 Meters · Place 3 · WestfieldWestfield	200 Meters	3	25.05	12
May 9	Union County Conference ChampionshipMay 9 · 200 Meters · Place 3 · WestfieldWestfield	200 Meters	3	25.05	12
May 9	Union County Conference ChampionshipMay 9 · 100 Meters · Place 4 · WestfieldWestfield	100 Meters	4	12.08	12
May 9	Union County Conference ChampionshipMay 9 · 100 Meters · Place 4 · WestfieldWestfield	100 Meters	4	12.08	12
May 9	Union County Conference ChampionshipMay 9 · 100 Meters · Place 4 · WestfieldWestfield	100 MetersRound P	4	12.16	12
May 9	Union County Conference ChampionshipMay 9 · 100 Meters · Place 4 · WestfieldWestfield	100 MetersRound P	4	12.16	12
May 9	Union County Conference ChampionshipMay 9 · 200 Meters · Place 3 · WestfieldWestfield	200 Meters	3	25.05	12
May 9	Union County Conference ChampionshipMay 9 · 200 Meters · Place 3 · WestfieldWestfield	200 Meters	3	25.05	12
May 9	Union County Conference ChampionshipMay 9 · 100 Meters · Place 4 · WestfieldWestfield	100 Meters	4	12.08	12
May 9	Union County Conference ChampionshipMay 9 · 100 Meters · Place 4 · WestfieldWestfield	100 Meters	4	12.16	12
Apr 20	Blue Devil ClassicApr 20 · 400 Meters · Place 10 · WestfieldWestfield	400 Meters	10	58.70 PB	12
Apr 20	Blue Devil ClassicApr 20 · 400 Meters · Place 10 · WestfieldWestfield	400 Meters	10	58.70	12

Date	Meet	Event	Pl	Mark	Gr
Dec 28	Len Pietrewicz InvitationalDec 28 · 300 Meters · Place 6 · WestfieldWestfield	300 Meters	6.	42.93a PB	12
Dec 28	Len Pietrewicz InvitationalDec 28 · 55 Meter · Place 1 · WestfieldWestfield	55 MeterRound P	1.	7.44aWind: 0	12
Dec 28	Len Pietrewicz InvitationalDec 28 · 55 Meter · Place 3 · WestfieldWestfield	55 Meter	3.	7.44aWind: 0	12
Feb 17	NJSIAA Group ChampionshipsFeb 17 · 55 Meters · Place 3 · WestfieldWestfield	55 MetersRound P	3	7.29	11
Feb 17	NJSIAA Group ChampionshipsFeb 17 · 55 Meters · Place 2 · WestfieldWestfield	55 Meters	2	7.31	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55 Meters · Place 3 · WestfieldWestfield	55 MetersRound P	3	7.38	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55 Meters · Place 2 · WestfieldWestfield	55 Meters	2	7.30	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55m Hurdles · Place 4 · WestfieldWestfield	55m HurdlesRound P	4	9.10	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55m Hurdles · Place 6 · WestfieldWestfield	55m Hurdles	6	9.11	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55 Meters · Place 3 · WestfieldWestfield	55 MetersRound P	3	7.38	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55 Meters · Place 3 · WestfieldWestfield	55 MetersRound P	3	7.38	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55 Meters · Place 2 · WestfieldWestfield	55 Meters	2	7.30	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55 Meters · Place 2 · WestfieldWestfield	55 Meters	2	7.30	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55m Hurdles · Place 4 · WestfieldWestfield	55m HurdlesRound P	4	9.10	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55m Hurdles · Place 4 · WestfieldWestfield	55m HurdlesRound P	4	9.10	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55m Hurdles · Place 6 · WestfieldWestfield	55m Hurdles	6	9.11	11
Feb 11	NJSIAA Sectional Championships - North 2 Group 1&4Feb 11 · 55m Hurdles · Place 6 · WestfieldWestfield	55m Hurdles	6	9.11	11
Jan 29	Union County Individual ChampionshipJan 29 · 55 Meters · Place 6 · WestfieldWestfield	55 MetersRound P	6	7.45	11
Jan 29	Union County Individual ChampionshipJan 29 · 55 Meters · Place 5 · WestfieldWestfield	55 Meters	5	7.43	11
Jan 29	Union County Individual ChampionshipJan 29 · 55m Hurdles · Place 8 · WestfieldWestfield	55m HurdlesRound P	8	9.38	11
Jan 29	Union County Individual ChampionshipJan 29 · 55m Hurdles · Place 7 · WestfieldWestfield	55m Hurdles	7	9.01	11

Date	Meet	Event	Pl	Mark	Gr
Jun 15	NJSIAA Meet of ChampionsJun 15 · 100 Meters · Place 5 · WestfieldWestfield	100 Meters	5	12.24	11
Jun 15	NJSIAA Meet of ChampionsJun 15 · 100 Meters · Place 5 · WestfieldWestfield	100 MetersRound P	5	12.11	11
Jun 9	NJSIAA Group Championships - 1 - 4 - NPAJun 9 · 200 Meters · Place 10 · WestfieldWestfield	200 Meters	10.	25.84aWind: -0.6	12
Jun 9	NJSIAA Group Championships - 1 - 4 - NPAJun 9 · 100 Meters · Place 5 · WestfieldWestfield	100 Meters	5.	12.36aWind: 0	12
Jun 2	NJSIAA Sectionals North 2 Groups 1 and 4Jun 2 · 200 Meters · Place 6 · WestfieldWestfield	200 Meters	6.	25.43a	12
Jun 2	NJSIAA Sectionals North 2 Groups 1 and 4Jun 2 · 100 Meters · Place 6 · WestfieldWestfield	100 MetersRound P	6.	12.61a	12
Jun 2	NJSIAA Sectionals North 2 Groups 1 and 4Jun 2 · 100 Meters · Place 3 · WestfieldWestfield	100 Meters	3.	12.34a	12
May 11	Union County Conference ChampionshipsMay 11 · 200 Meters · Place 4 · WestfieldWestfield	200 Meters	4	25.34	11
May 11	Union County Conference ChampionshipsMay 11 · 100 Meters · Place 3 · WestfieldWestfield	100 MetersRound P	3	12.42	11
May 11	Union County Conference ChampionshipsMay 11 · 100 Meters · Place 3 · WestfieldWestfield	100 Meters	3	12.41	11

Date	Meet	Event	Pl	Mark	Gr
Dec 27	The Ocean Breeze Holiday FestivalDec 27 · 55 Meter · Place 3 · WestfieldWestfield	55 MeterRound P	3.	7.49a	11
Dec 27	The Ocean Breeze Holiday FestivalDec 27 · 55 Meter · Place 2 · WestfieldWestfield	55 Meter	2.	7.43a PB	11
Dec 16	Essex County Track Coaches Assn. Season Opener InviteDec 16 · 55m Hurdles · Place 6 · WestfieldWestfield	55m Hurdles33"Round P	6.	9.07a	11
Dec 16	Essex County Track Coaches Assn. Season Opener InviteDec 16 · 55m Hurdles · Place 3 · WestfieldWestfield	55m Hurdles33"	3.	8.77a PB	11
Dec 16	Essex County Track Coaches Assn. Season Opener InviteDec 16 · 200 Meters · Place 14 · WestfieldWestfield	200 Meters	14.	27.35a	11
Feb 25	NJSIAA Group ChampionshipsFeb 25 · 55 Meters · Place 11 · WestfieldWestfield	55 MetersRound P	11	7.51	10
Feb 12	NJSIAA Sectional Championships - North 2 Group 1&4 Feb 12 · 55 Meters · Place 7 · WestfieldWestfield	55 MetersRound P	7	7.64	10
Feb 12	NJSIAA Sectional Championships - North 2 Group 1&4 Feb 12 · 55 Meters · Place 5 · WestfieldWestfield	55 Meters	5	7.54	10
Jan 30	Union County Individual ChampionshipJan 30 · 55 Meter · Place 8 · WestfieldWestfield	55 MeterRound P	8.	7.60a	10
Jan 30	Union County Individual ChampionshipJan 30 · 55 Meter · Place 8 · WestfieldWestfield	55 Meter	8.	7.67a	10

Date	Meet	Event	Pl	Mark	Gr
Jun 3	NJSIAA Sectionals North 2 Groups 1 and 4Jun 3 · 100m Hurdles · Place 11 · WestfieldWestfield	100m Hurdles33" / 0.838mRound P	11.	17.39a	11
Jun 3	NJSIAA Sectionals North 2 Groups 1 and 4Jun 3 · 200 Meters · Place 11 · WestfieldWestfield	200 Meters	11.	26.90a	11
Jun 3	NJSIAA Sectionals North 2 Groups 1 and 4Jun 3 · 100 Meters · Place 6 · WestfieldWestfield	100 MetersRound P	6.	12.66a	11
Jun 3	NJSIAA Sectionals North 2 Groups 1 and 4Jun 3 · 100 Meters · Place 7 · WestfieldWestfield	100 Meters	7.	12.78a	11
May 24	Union County ChampionshipsMay 24 · 100m Hurdles · Place 10 · WestfieldWestfield	100m Hurdles33" / 0.838mRound P	10.	16.42a PB	11
May 24	Union County ChampionshipsMay 24 · 200 Meters · Place 9 · WestfieldWestfield	200 Meters	9.	26.64a	11
May 24	Union County ChampionshipsMay 24 · 100 Meters · Place 11 · WestfieldWestfield	100 MetersRound P	11.	13.01a	11
May 12	Union County Conference ChampionshipsMay 12 · 200 Meters · Place 7 · WestfieldWestfield	200 Meters	7	26.61	—
May 12	Union County Conference ChampionshipsMay 12 · 200 Meters · Place 7 · WestfieldWestfield	200 Meters	7	26.61	—
May 12	Union County Conference ChampionshipsMay 12 · 100m Hurdles · Place 7 · WestfieldWestfield	100m Hurdles	7	17.38	—
May 12	Union County Conference ChampionshipsMay 12 · 100m Hurdles · Place 7 · WestfieldWestfield	100m Hurdles	7	17.38	—
May 12	Union County Conference ChampionshipsMay 12 · 100 Meters · Place 7 · WestfieldWestfield	100 Meters	7	12.75	—
May 12	Union County Conference ChampionshipsMay 12 · 100 Meters · Place 7 · WestfieldWestfield	100 Meters	7	12.75	—

Date	Meet	Event	Pl	Mark	Gr
Dec 27	Ocean Breeze Holiday FestivalDec 27 · 55 Meter · Place 5 · WestfieldWestfield	55 MeterRound P	5.	7.64a	10
Dec 27	Ocean Breeze Holiday FestivalDec 27 · 55 Meter · Place 5 · WestfieldWestfield	55 Meter	5.	7.74a	10

Date	Meet	Event	Pl	Mark	Gr
May 15	Raider Novice InvitationalMay 15 · 200 Meters · Place 8 · WestfieldWestfield	200 Meters	8.	28.47a	10
May 1	Blue Devil ClassicMay 1 · 400 Meters · Place 14 · WestfieldWestfield	400 Meters	14	1:11.74	10
May 1	Blue Devil ClassicMay 1 · 400 Meters · Place 14 · WestfieldWestfield	400 Meters	14	1:11.74	10

Sean O'Brien

Personal bests

2026 Outdoor Track

2025 Indoor Track

2025 Outdoor Track

2024 Indoor Track

2024 Outdoor Track

2023 Indoor Track

2023 Outdoor Track

2022 Indoor Track

2022 Outdoor Track

2021 Indoor Track

2021 Outdoor Track