The Osprey (7-3, 25-23) were held to five hits by Brewers pitchers Taylor Wall (2-1), who allowed just three hits in his six innings of work, and Martin Viramontes, who pitched the final three innings to pick up his first save of the season.
The loss also didn't cost the Osprey any ground in the Pioneer League North Division standings, as the Great Falls Voyagers knocked off the first-place Billings Mustangs, 5-2. The Osprey are just a game behind the Mustangs in the Second Half Standings.
The Brewers (4-6, 17-31) scored twice in the bottom of the first inning off of Osprey starter Karl Triana (3-4) to take a 2-0 lead. Helena added a run in the fourth, three more in the fifth inning and a run in the seventh for the final score.
Triana was backed by Patrick Smith, who allowed an unearned run on three hits and a walk in 2 2/3 innings pitched, while striking out four Brewers, and Mike Blake, who pitched a scoreless eighth inning.
Brito had two of Missoula's five hits on the night, while Breland Almadova, Danny Pulfer and Tyler Bream added base hits for the Osprey.
The Osprey and Brewers will continue their three-game series at Kindrick Legion Field on Wednesday. Right-hander Yoimer Camacho will make the start for the Osprey, while the Brewers will counter with right-hander Ryan Gibbard.
Tickets are available now at the MSO Hub Box Office, located at 140 North Higgins in Downtown Missoula, online at MissoulaOsprey.com and by phone (406) 543-3300.