Career Honors
- OSU Scholar-Athlete (2021)
2021 (Freshman)
- Appeared in 9 games and made 1 start in his freshman season
- Recorded 1 save in 17.1 innings of work, finishing the year with a 3.63 ERA and an 0-3 record
- Recorded the save in his first ever appearance as a Buckeye, allowing 1 earned run and striking out 4 across 3 innings of work in the 12-6 win over Illinois in the second game of their March 6 doubleheader
- Pitched consecutive scoreless outings in wins against Iowa on March 26 and Indiana on April 4
- Struck out 5 of the 6 batters he faced in 2 perfect innings at Maryland on April 18
- Gave up only 1 hit and struck out 4 batters across 2 innings in the 11-3 win over Purdue on April 30
- In his sole start of the season on May 24 at Indiana, Coupet struck out 7 Hoosiers in 3.1 innings of work, giving up only 1 earned run in the 2-0 loss.
Prior to Ohio State
- Isaiah is the son of Ernst and Carol Coupet
- Played for John McCarthy at Homewood-Flossmoor High School
- Played summer ball for Lou Collier A’s
- All-SWSC selection
- Posted a 2.05 ERA with 58 strikeouts in 44.1 innings pitched as a junior