The Nittany Lions received a first-round bye after upsetting No. 21 Maryland Sunday afternoon.
Sanderson is the Big Ten Coach of the Year, while Haines earned Freshman of the Year honors.
After forcing a third game in the series and striking first on Sunday night, the Nittany Lions couldn't respond to three Buckeye goals.
Camren Wynter hit his second-straight game winner to help the Nittany Lions land at a .500 conference-win percentage.
Fresh off their first-ever CHA Tournament championship, the Nittany Lions will take on Quinnipiac in the opening round of the NCAA Tournament on Thursday, March 9.
Kylee Lingenfelter's record-breaking 17-strikeout performance led the Nittany Lions to sweep Delaware, Norfolk State, and Hampton.