Pittsburg State swept the Bearcats with a 5-1 win in the first game, and a 4-3 victory in the second.
Northwest must take two from Pitt Saturday and Northeastern State must lose twice for the Bearcats to advance to the MIAA Tournament.
Austin Warren put the 'Cats in position to win game one. In his final start at Bearcat Field, he allowed just two earned runs in 6 1/3 innings of work but still took the loss.
Pitt trailed Northwest 2-1 with one out in the fifth inning. Derek Hackney drove in a run on a single to center to tie the game. Andrew Kreiling followed with a ground ball to second base. Northwest's Nikko Pablo bobbled it allowing all runners to advance safely, including Sam Falcon with the go-ahead score. The Gorillas tallied four runs in the inning -- the final three unearned.
Brandon Huske and Steven Garber scored runs for the Bearcats in the first two innings, but they were shut down from that point on.
Pablo made up for his error in the first game with a good day at the plate in the second contest. The freshman went 2-4 with a double and two RBI. Austin Wulff added his eighth home run of the season -- a solo shot in the fourth.
The Bearcats totaled 11 hits in the game, but stranded six on base.
Northwest wraps up the regular season Saturday with another doubleheader against Pitt State in Maryville.