The Prairie Stars completed three double plays in a seven-inning blanking of McKendree to open the series with the Bearcats.
UIS got four runs in the third inning and then six more in the seven to beat McKendree, 10-0, via the run rule in GLVC play on Friday.
The UIS defense got rolling as well as the game went on, turning double plays in the fifth, sixth and seventh innings to help keep the shutout in tact.
Brock Immke earned the win for UIS (22-11-1, 13-9 GLVC) in 5.2 innings of work, his fifth on the year.