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William Seiser

Mattawan · Class of 2028

35 resultsTrack & Field2024–2026
WrappedYour 2026 Outdoor Track season, WrappedRaces, wins, PRs and rankings as cards for your Instagram StoryShare it →

Personal bests

Best marks in available results
Event / courseMarkMeetDate
100 Meters · OutdoorPortage Central @ Mattawan · Apr 2812.59aPortage Central @ MattawanApril 28, 2026
200 Meters · IndoorGVSU MITS #1 (Dec 7th) · Dec 727.36aGVSU MITS #1 (Dec 7th)December 7, 2024
200 Meters · OutdoorLakeshore @ Mattawan · Apr 1425.03aLakeshore @ MattawanApril 14, 2026
400 Meters · IndoorGVSU Laker Indoor Challenge- Boys Big Schools · Mar 1853.93aGVSU Laker Indoor Challenge- Boys Big SchoolsMarch 18, 2026
400 Meters · OutdoorMHSAA LP Region 03-1 @ Portage Central · May 1653.35aMHSAA LP Region 03-1 @ Portage CentralMay 16, 2026
70 Meter · OutdoorKAMSL: Mattawan-Hillside-BCC @ Portage Central MS · Apr 1810.28aKAMSL: Mattawan-Hillside-BCC @ Portage Central MSApril 18, 2024
800 Meters · IndoorGVSU MITS #1 (Dec 7th) · Dec 73:01.66aGVSU MITS #1 (Dec 7th)December 7, 2024
800 Meters · OutdoorPortage Central @ Mattawan · Apr 282:10.05aPortage Central @ MattawanApril 28, 2026
Long Jump · OutdoorMeet vs. MATTAWAN MIDDLE SCHOOL Southwestern-Edison Junior Academy GULL LAKE MIDDLE SCHOOL · May 1414' 7.25Meet vs. MATTAWAN MIDDLE SCHOOL Southwestern-Edison Junior Academy GULL LAKE MIDDLE SCHOOLMay 14, 2024

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

2026 Outdoor Track

11 results
DateMeetEventPlMarkGr
May 16MHSAA LP Region 03-1 @ Portage CentralMay 16 · 400 Meters · Place 16 · MattawanMattawan400 Meters1653.35a PB10
May 9SMAC Championships (EQ)May 9 · 400 Meters · Place 9 · MattawanMattawan400 Meters954.11a10
Apr 28Portage Central @ MattawanApr 28 · 800 Meters · Place 3 · MattawanMattawan800 Meters32:10.05a PB10
Apr 28Portage Central @ MattawanApr 28 · 100 Meters · Place 18 · MattawanMattawan100 Meters1812.59a PB10
Apr 24Don Lukens Invitational (EQ)Apr 24 · 400 Meters · Place 17 · MattawanMattawan400 Meters1753.92a10
Apr 17Ram Classic (EQ approved)Apr 17 · 400 Meters · Place 29 · MattawanMattawan400 Meters2954.57a10
Apr 14Lakeshore @ MattawanApr 14 · 400 Meters · Place 2 · MattawanMattawan400 Meters254.18a10
Apr 14Lakeshore @ MattawanApr 14 · 200 Meters · Place 3 · MattawanMattawan200 Meters325.03a PB10
Apr 11Lions InvitationalApr 11 · 400 Meters · Place 3 · MattawanMattawan400 Meters353.99a10
Apr 7St. Joe @ MattawanApr 7 · 400 Meters · Place 2 · MattawanMattawan400 Meters254.43a10
Mar 24Wildcat Intrasquad MeetMar 24 · 400 Meters · Place 3 · MattawanMattawan400 Meters3.56.5Unofficial10

2026 Indoor Track

1 results
DateMeetEventPlMarkGr
Mar 18GVSU Laker Indoor Challenge- Boys Big SchoolsMar 18 · 400 Meters · Place 30 · MattawanMattawan400 Meters3053.93a PB10

2025 Outdoor Track

10 results
DateMeetEventPlMarkGr
May 17MHSAA LP Region 03-1 @ Portage CentralMay 17 · 400 Meters · Place 26 · MattawanMattawan400 Meters2656.74a9
May 10SMAC ChampionshipsMay 10 · 400 Meters · Place 20 · MattawanMattawan400 Meters2057.72a9
May 5Mattawan and St. Joe at LakeshoreMay 5 · 400 Meters · Place 7 · MattawanMattawan400 Meters7.59.89a9
May 5Mattawan and St. Joe at LakeshoreMay 5 · 100 Meters · Place 41 · MattawanMattawan100 Meters41.13.35a9
Apr 29Mattawan @ Portage CentralApr 29 · 400 Meters · Place 6 · MattawanMattawan400 Meters658.71a9
Apr 29Mattawan @ Portage CentralApr 29 · 200 Meters · Place 27 · MattawanMattawan200 Meters2728.52a9
Apr 25Don Lukens Invitational - EQ ApprovedApr 25 · 400 Meters · Place 18 · MattawanMattawan400 Meters1859.039
Apr 22Mattawan @Portage NorthernApr 22 · 400 Meters · Place 3 · MattawanMattawan400 Meters3.59.24a9
Apr 18HUSKIE Invitational (EQ Approved)Apr 18 · 400 Meters · Place 20 · MattawanMattawan400 Meters20.58.06a9
Apr 12Paw Paw Lions InvitationalApr 12 · 400 Meters · Place 9 · MattawanMattawan400 Meters957.14a9

2024 Indoor Track

2 results
DateMeetEventPlMarkGr
Dec 7GVSU MITS #1 (Dec 7th)Dec 7 · 800 Meters · Place 62 · 5GP Run Club5GP Run Club800 Meters62.3:01.66a PB9
Dec 7GVSU MITS #1 (Dec 7th)Dec 7 · 200 Meters · Place 96 · 5GP Run Club5GP Run Club200 Meters96.27.36a PB9

2024 Outdoor Track

11 results
DateMeetEventPlMarkGr
May 20MHSAA MS/JH Regional - Zone 1 (D1&2) @ VicksburgMay 20 · Long Jump · Place 28 · MattawanMattawanLong Jump28.13' 7.58
May 14Meet vs. MATTAWAN MIDDLE SCHOOL Southwestern-Edison Junior Academy GULL LAKE MIDDLE SCHOOLMay 14 · Long Jump · Place 11 · MattawanMattawanLong Jump11.14' 7.25 PB8
May 14Meet vs. MATTAWAN MIDDLE SCHOOL Southwestern-Edison Junior Academy GULL LAKE MIDDLE SCHOOLMay 14 · 400 Meters · Place 6 · MattawanMattawan400 Meters6.1:01.32a8
May 14Meet vs. MATTAWAN MIDDLE SCHOOL Southwestern-Edison Junior Academy GULL LAKE MIDDLE SCHOOLMay 14 · 200 Meters · Place 11 · MattawanMattawan200 Meters11.27.63a8
May 2KAMSL: Mattawan, Maple Street and Portage WestMay 2 · Long Jump · Place 11 · MattawanMattawanLong Jump11.14' 28
May 2KAMSL: Mattawan, Maple Street and Portage WestMay 2 · 200 Meters · Place 15 · MattawanMattawan200 Meters15.28.04a8
Apr 29KAMSL: North, Mattawan, Linden Grove @ BCCApr 29 · Long Jump · MattawanMattawanLong Jump—SCR8
Apr 29KAMSL: North, Mattawan, Linden Grove @ BCCApr 29 · 200 Meters · Place 10 · MattawanMattawan200 Meters10.29.06a8
Apr 29KAMSL: North, Mattawan, Linden Grove @ BCCApr 29 · 100 Meters · Place 17 · MattawanMattawan100 Meters17.14.08a8
Apr 18KAMSL: Mattawan-Hillside-BCC @ Portage Central MSApr 18 · 70 Meter · Place 12 · MattawanMattawan70 Meter12.10.28a PB8
Apr 18KAMSL: Mattawan-Hillside-BCC @ Portage Central MSApr 18 · 200 Meters · Place 14 · MattawanMattawan200 Meters14.28.75a8