Peters entered the transfer portal in May.
The Wolverines took control of Bracket 1 in their first CWS appearance since 1984.
UM is in its second College World Series game.
Florida State or Arkansas up next for Wolverines
The Wolverines are the first Big Ten team to make the CWS since Indiana in 2013.
Meet Michigan’s competition.
Wolverines beat top-seeded UCLA 4-2 to seal first trip to CWS since 1984.