COLUMBUS, Ohio -- Tony Piazza's grand slam capped a seven-run sixth inning as Southwest Missouri State earned its first trip to the College World Series with a 13-7 victory over Ohio State on Sunday night.

Shaun Marcum also homered for the Bears (40-24), who swept the Super Regional series at Ohio State's Bill Davis Stadium and will play the winner of the Houston-Rice series in the first round in Omaha.

Southwest Missouri State came within a win of going to the College World Series in 1999, and again last season.

The Bears led 3-0 before Ohio State (44-21) scored the next six runs. But Southwest Missouri State broke it open with seven unearned runs in the sixth, capped by Piazza's grand slam and Marcum's solo shot.

Brett Garrard and Steve Caravati homered for the Buckeyes.