Purdue fell to MSU on Sunday, but Minnesota lost in 12 innings to Iowa. IU beat Michigan twice to move into a tie for second.
Since the Big Ten site and d1baseball.com don't update their standings until the next day, I figured them out myself.
Mich St 8-7
Penn St 8-7
Ohio St 8-10
3 games series left for each team:
Purdue – Mich, @ Iowa
Minnesota – Penn St, @ Nebraska, @ Illinois
Indiana – Nebraska, @ Northwestern, Ohio St
Magic Number is 5 for outright title, 4 for a tie
Purdue plays @ UCLA this weekend, so everybody should have the same number of conference games played after that.