BOSTON (AP) Josh Donaldson was confused trying to explain that his ball caromed off the top of the Green Monster.
It didn't matter because the AL East-leading Toronto Blue Jays scored after that crazy play in the 10th inning to run away with the win.
Troy Tulowitzki singled in the go-ahead run off Alexi Ogando to trigger a four-run 10th that lifted the Blue Jays to a 5-1 victory over the Boston Red Sox on Tuesday night.
Donaldson led off the 10th with a triple against Ogando (2-1), a towering fly ball that appeared to hit the top corner of the Green Monster and bounced back.
After a review upheld the call of the ball not crossing the red line at the top for a homer, the umpiring crew reviewed and confirmed Donaldson was safe at third.
''I saw it and saw it bounce up,'' Donaldson said. ''I don't know the rules. I'm kind of flustered.''
Tulowitzki singled past third baseman Pablo Sandoval. Chris Colabello followed with an RBI single, Ogando balked in the next run and Kevin Pillar had a sacrifice fly.
When the Blue Jays clubhouse opened about a dozen players were crowded around a TV watching and debating whether Donaldson's hit was a homer.
''I thought it was a homer,'' Toronto manager John Gibbons said. ''They have better cameras than we have.''
With the win, Toronto increased its lead in the East to 1 1-2 games over the New York Yankees, who lost 2-1 to Baltimore. The Blue Jays won for the 13th time in 17 games.
Travis Shaw homered for Boston, which had its four-game winning streak stopped.
''We tried to just navigate through their lineup the best that we could, give ourselves the best opportunity to get through that inning,'' Boston's interim manager Torey Lovullo said of the 10th. ''Obviously one of the best players in the American League comes up with a leadoff triple, you're just trying to preserve that run the best that you can.''
Aaron Sanchez (7-5) worked one inning for the win.
Red Sox second baseman Dustin Pedroia returned after missing seven weeks with a strained right hamstring. He went 1 for 4 with a double.
Toronto starter R.A. Dickey gave up one run and four hits in six innings. He was 0-3 with a 5.76 ERA in four starts against Boston this season.
Boston's Henry Owens struggled with his control, but held the Blue Jays to one run and three hits in 5 1-3 innings. He walked four, hit two batters and had a balk.
''You know I had a lot of long innings so it was tough for our offense to get going and we hung tough,'' Owens said.
The Blue Jays moved ahead without a hit in the first inning. Ben Revere was hit on the right hand with the game's second pitch, advance on a wild pitch and a double steal before scoring on Edwin Encarnacion's ground out.
Blue Jays: RHP Marcus Stroman will make his first start of the season Saturday against New York at Yankee Stadium. He underwent surgery in March after tearing the ACL in his left knee. ... LHP Mark Buehrle is getting a cortisone shot in his pitching shoulder.
Red Sox: Lovullo said RHP Steven Wright may not pitch again this season due to the time he's lost recovering from a concussion.
Pillar's bat slipped out of his hands, went flying into the stands about 10 rows behind the Blue Jays' on-deck circle and was caught by a fan.
MOOKIE EXTENDS STREAK
Mookie Betts of the Red Sox extended his hitting streak to a career-best 14 games with a single in the third inning.
Blue Jays: RHP Drew Hutchison (13-3) looks to rebound from a rough outing in the series finale Wednesday. He gave up six runs in five innings of a loss against Baltimore after winning his previous four starts.
Red Sox: RHP Joe Kelly (9-6) tries to win his eighth straight start. If successful, it would be the club's longest since Hall of Famer Pedro Martinez won nine in a row in 1999.