After taking the first set Tuesday against St. Clair, Sullivan found themselves trailing throughout most of the second.
Sullivan put the finishing touches on their regular season Saturday with a championship at the Rolla Tournament.
Sullivan will be the No. 1 seed in the Class 3 District 9 tournament at Bank of Sullivan Ballpark Oct. 4-6.
Sullivan allowed more runs Monday at Lutheran South than all other games combined during their winning streak, but it didn’t matter.
Pacific only needed three big plays from Matt Strong Friday night, while everything in between was stymied by a Sullivan defense that put together one of its best games of the season.