Peterson struck out three of the contest’s first five batters, flashing a good breaking ball, and scattered four hits and three walks over six innings.
A sliding Aaron Fuzesy catch in right and strike to second base erased a lead-off fourth-inning walk before Bozeman’s Cole Smith supplied the Bucks’ first knock.
An inning later, staked to a 4-0 lead, Peterson struck out Quinn Pershing and induced a Smith fly out to escape.
Perlinski added an RBI single in the home half, part of a two-RBI day, as he joined Colt Tietje with two hits in the victory.
Brayden Beatty reached base three times on Tuesday, drove in a pair, and scored twice.