The Schaumburg Boomers jumped out to an early 3-1 lead Sunday but dropped their third straight to the defending champion Joliet Slammers 11-5.
In the longest nine-inning game of the season, which lasted just more than four hours, the Boomers (41-31) lost a home series for just the fourth time as the Slammers (30-42) collected 17 hits.
Schaumburg snapped a 29-inning scoreless streak when Nate Baumann, who finished 2-4, crossed the plate following a Drew Heithoff single and an error by the Slammers' David Christensen in right field.
The Boomers took their first lead of the series on a Jereme Milons single to center, and the advantage grew to 3-1 on an RBI single by Baumann in the third.
It was pretty much all Slammers after that as Joliet scored 10 runs over the game's final six innings.
David Fox, Kyle Maunus and Josh Lyon each contributed 3-hit games for the visitors, and Chase Doremus picked up the win out of the bullpen with 2 shutout innings of relief.
Jason Braun took the loss out of the Boomers' bullpen, surrendering 2 runs on 2 hits in his two-thirds of an inning.
Steve McQuail's team-leading 13th home run cut the Slammers' advantage to 8-6, but the Boomers would come no closer as Joliet scraped together 3 runs in the ninth to put the game out of reach.
Frank Pfister added a pair of hits for the home team, and Milons reached three times with a walk and 2 singles.