TORONTO -- In his final start before the calendar changes, Kevin Gausman made sure he didn't finish the month of June without a win.
Gausman won for the first time in four starts, Mark Trumbo hit an RBI double and the Baltimore Orioles beat the Toronto Blue Jays 3-1 on Tuesday night.
The Orioles won their third straight and improved to 8-2 against the Blue Jays this season. Toronto is 12-20 against AL East opponents.
The Blue Jays have lost five of seven.
Gausman (4-7) allowed four hits in 5 1/3 innings, his first scoreless outing of the season, winning for the first time since May 31 against the Yankees. The right-hander came in 0-3 with a 9.20 ERA over his previous three starts.
"He was really working the bottom of the zone," Orioles manager Buck Showalter said. "He pitched a lot with his fastball early and went to some other pitches the second and third time around ."
Gausman said he's made an effort to mix up his arsenal in recent starts.
"Earlier in the season I got way too fastball-happy in some counts," he said. "That's really something I'm trying to do better, mixing up my pitches, moving up and down and in and out, just trying to keep these guys off balance."
Michael Givens pitched 1 2/3 innings and Darren O'Day worked the eighth. Brad Brach gave up a two-out homer to Troy Tulowitzki in the ninth but held on for his 14th save.
Gausman snapped his winless streak against his favorite opponent: he's 2-0 with a 1.99 ERA in four starts against the Blue Jays.
"He's got a great arm," Blue Jays manager John Gibbons said. "He was hitting his spots for the most part, just enough off speed stuff to keep you honest."
Jose Bautista reached on a bloop single to begin the Toronto first, but the Blue Jays didn't get another hit off Gausman until a one-out single by Kendrys Morales in the fifth.
"I get the best view of everybody who gets on that bump," Orioles center fielder Adam Jones said, "and (Gausman) attacked that zone."
Gausman left after Bautista singled and Martin walked. Givens began his outing with a wild pitch, advancing the runners, then got Josh Donaldson to line out sharply to third. Justin Smoak walked to load the bases but Givens struck out Morales to end the threat.
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The Orioles did all the scoring they would need with a two-out rally against Joe Biagini in the first. Jonathan Schoop singled and Jones walked before Trumbo lined a two-run double to center.
Jones made it 3-0 with an RBI single in the third.
Biagini (2-7) allowed three runs and walked a season-worst four in 5 1/3 innings, losing for the fifth time in six starts.