Racecast

William Seiser

Mattawan (MI) · 10 · SMACMI D1 · Compare head to head

Athlete rating 117.3 2026 TF season
Best race 117.3 TF
Races 39
Seasons 3 2024 — 2026

RankedNation #24103·MI #1043·MI D1 #602·SMAC #34·Team #11 ?

Cross Country

2025 XC 108.7

Mattawan (MI) · Grade 10

Date Meet Event Result Place Rating Difficulty PR/SR Flags
2025-10-25 Portage West MS 5000m 22:51.2 200th · 10th on team +0.038 ★CR CSR
2025-10-18 Linden Grove Middle School 5000m 20:19.79 44th · 6th on team 110.7 +0.066 ★CR R CSR RSR
2025-10-11 Sturgis Middle School 5000m 20:54.55 114th · 12th on team 105.1 +0.051 ★CR CSR
2025-09-27 Otsego HS 5000m 19:40.4 76th · 6th on team 110.4 +0.023 ★PR ★CR R SR CSR RSR

Track & Field

2026 TF 117.3

Mattawan (MI) · Grade 10

Date Meet Event Result Place Rating Difficulty PR/SR Flags
2026-05-16 MHSAA LP Region 03-1 @ Portage Central 400m 53.35 16th · 1st on team -0.022 ★PR SR
2026-05-09 SMAC Championships (EQ) 400m 54.11 9th · 1st on team -0.022
2026-04-28 Portage Central @ Mattawan 800m 2:10.04 3rd · 1st on team 117.3 -0.022 ★PR ★R SR RSR
2026-04-28 Portage Central @ Mattawan 100m 12.58 18th · 4th on team -0.022 ★PR SR
2026-04-24 Don Lukens Invitational (EQ) 400m 53.92 17th · 2nd on team -0.031 PR SR
2026-04-17 Ram Classic (EQ approved) 400m 54.56 29th · 1st on team -0.034
2026-04-14 Lakeshore @ Mattawan 200m 25.03 3rd · 2nd on team -0.022 ★PR SR
2026-04-14 Lakeshore @ Mattawan 400m 54.18 2nd · 2nd on team -0.022
2026-04-07 St. Joe @ Mattawan 400m 54.43 2nd · 1st on team -0.022
2026-03-24 Wildcat Intrasquad Meet 400m 56.64 3rd · 3rd on team -0.022
2026-03-18 GVSU Laker Indoor Challenge- Boys Big Schools 400m 53.93 30th · 1st on team -0.042 PR SR

2025 TF 82.3

Mattawan (MI) · Grade 9

Date Meet Event Result Place Rating Difficulty PR/SR Flags
2025-05-16 MHSAA LP Region 03-1 @ Portage Central 400m 56.73 26th · 1st on team -0.022 PR SR
2025-05-10 SMAC Championships 400m 57.71 20th · 2nd on team -0.017
2025-05-05 Mattawan and St. Joe at Lakeshore 400m 59.88 7th · 4th on team -0.017
2025-05-05 Mattawan and St. Joe at Lakeshore 100m 13.34 41st · 11th on team -0.017 PR SR
2025-04-29 Mattawan @ Portage Central 400m 58.71 6th · 3rd on team -0.022
2025-04-29 Mattawan @ Portage Central 200m 28.52 27th · 11th on team -0.022
2025-04-25 Race results → 400m 59.03 18th · 3rd on team
2025-04-22 Mattawan @Portage Northern 400m 59.23 3rd · 1st on team -0.021
2025-04-18 HUSKIE Invitational (EQ Approved) 400m 58.06 20th · 3rd on team -0.021
2025-04-12 Paw Paw Lions Invitational 400m 57.13 9th · 3rd on team -0.031 PR SR
2025-01-25 GVSU MITS #4 400m 58.31 53rd · 3rd on team -0.042 PR SR
2024-12-07 GVSU MITS #1 (Dec 7th) 800m 3:01.66 62nd · 7th on team 82.3 -0.042 PR R SR RSR
2024-12-07 GVSU MITS #1 (Dec 7th) 200m 27.36 96th · 4th on team -0.042 PR SR

2024 TF

Mattawan (MI) · Grade 8

Date Meet Event Result Place Rating Difficulty PR/SR Flags
2024-05-20 MHSAA MS/JH Regional - Zone 1 (D1&2) @ Vicksburg lj 13' 7.5 -0.024
2024-05-14 Meet vs. MATTAWAN MIDDLE SCHOOL Southwestern-Edison Junior Academy GULL LAKE MIDDLE SCHOOL lj 14' 7.25 -0.027
2024-05-14 Meet vs. MATTAWAN MIDDLE SCHOOL Southwestern-Edison Junior Academy GULL LAKE MIDDLE SCHOOL 400m 1:01.32 6th · 4th on team -0.027 PR SR
2024-05-14 Meet vs. MATTAWAN MIDDLE SCHOOL Southwestern-Edison Junior Academy GULL LAKE MIDDLE SCHOOL 200m 27.63 11th · 4th on team -0.027 PR SR
2024-05-02 KAMSL: Mattawan, Maple Street and Portage West lj 14' 2 -0.024
2024-05-02 KAMSL: Mattawan, Maple Street and Portage West 200m 28.03 15th · 4th on team -0.024 PR SR
2024-04-29 KAMSL: North, Mattawan, Linden Grove @ BCC lj SCR -0.024
2024-04-29 KAMSL: North, Mattawan, Linden Grove @ BCC 100m 14.08 17th · 2nd on team -0.024 PR SR
2024-04-29 KAMSL: North, Mattawan, Linden Grove @ BCC 200m 29.05 10th · 4th on team -0.024
2024-04-18 KAMSL: Mattawan-Hillside-BCC @ Portage Central MS 200m 28.75 14th · 4th on team -0.022 PR SR
2024-04-18 KAMSL: Mattawan-Hillside-BCC @ Portage Central MS 70m 10.28 12th · 3rd on team -0.022 ★PR SR