TORONTO (AP) -- An unlikely rookie is leading the Detroit Tigers in wins.
Armando Galarraga won his second straight start, Edgar Renteria homered and the Tigers beat the Toronto Blue Jays 5-1 Monday.
Ivan Rodriguez had four hits and Renteria scored twice for the Tigers.
Galarraga (2-0) has won back-to-back starts since being called up from Triple-A Toledo last week to replace Dontrelle Willis, sidelined by a hyperextended knee.
Acquired in an offseason trade with Texas, Galarraga won't face the Rangers when they visit Detroit this week, but still had a message for his former team.
"They made a mistake," he said, laughing.
No other Tigers pitcher has more than one win, and the quintet of Jeremy Bonderman, Nate Robertson, Kenny Rogers, Justin Verlander and Willis have just two victories between them so far.
The 26-year-old Galarraga blanked the Blue Jays on three singles for 5 1-3 innings. He struck out four and walked four.
"He had a lot of late movement," Blue Jays second baseman Aaron Hill said. "He was running pitches in, he was doing well with his slider."
Galarraga, who beat Cleveland last week, lowered his ERA to 1.50. He has not allowed a hit to a right-hander in 21 at-bats since joining the Tigers.
"He's got a good sinker, a good slider," Rodriguez said. "He was able to use them today and make the right-handed hitters hit the ball on the ground."
The Blue Jays loaded the bases against Galarraga in both the third and fourth innings, but failed to score each time.
"I was trying to be more aggressive when I had runners on base," Galarraga said. "When the bases were loaded, I tried to be aggressive in that moment."
"His control wasn't as good today, but he dodged a couple of bullets," Tigers manager Jim Leyland said.
Toronto finished 0-for-8 with runners in scoring position Monday and went 7-for-56 (.125) with runners in scoring position on this six-game homestand, winning just twice.
Tigers reliever Clay Rapada got one out in the sixth, Aquilino Lopez worked 1 1-3 innings and Denny Bautista pitched the eighth.
Gregg Zaun hit a leadoff homer in the ninth Toronto off Todd Jones. Zaun shook his head after fouling off a high, 3-2 pitch, then hit the next delivery over the right-field wall for his first home run of the season.
The Tigers gave Galarraga all the support he needed with a four-run second off Shaun Marcum (2-1). Ryan Raburn hit a two-run single, Brandon Inge followed with a sacrifice fly and Rodriguez capped the burst with an RBI single.
"We got some big hits today and took advantage of our opportunities," Leyland said. "That's huge, that's what you've got to do."
Renteria led off the sixth with his third homer of the season and second of this series.
Marcum lost for the first time in four starts, allowing five runs in 5 2-3 innings, his shortest outing this season. He walked a season-high four and struck out two.
"Obviously we didn't bring anything to the table today," Hill said. "Marcum didn't have his best day, we didn't hit, didn't play defense. It's one of those games that's going to be easy to forget."