TORONTO (AP) -- David Wells said a stiff back was the reason for one of the worst starts of his career. Manager Jim Fregosi disagreed.

Edgar Martinez hit a three-run homer as the Seattle Mariners scored six runs in the first inning to knock out Wells and beat the Toronto Blue Jays 11-9 Friday night.

	Wells lasted one six-run inning, matching the shortest outing of his career.

"It just got real tight after the second batter and I was fighting it," Wells said. "After that I was making bad pitches up in the zone."

Wells, who shut out Texas in his last start, matched the shortest outing of his career. He gave up consecutive singles before Martinez hit a 426-foot homer to give Seattle a 3-0 lead.

After a walk and a single, Dan Wilson hit another three-run homer. Wells (1-1) walked straight to the clubhouse after ending the bottom of the inning with a strikeout.

"His back bothered him against Texas and it bothered him tonight, but that wasn't the problem," Fregosi said. "It was location."

Martinez didn't notice anything wrong with Wells.

"He didn't act like it was hurting," Martinez said. "His location was off."

The only previous time he was knocked out that quickly came April 18, 1996, when he allowed seven runs in the first inning against Oakland.

"When I came to the clubhouse I was locked pretty good," said Wells, who battled back problems during the spring. "The stiffness wasn't shooting down, so hopefully that's all it was, a little stiffness."

Martinez, who had five RBI, added a two-run single in the second inning off Pete Munro to make it 9-0.

Jamie Moyer (2-1) allowed four runs and nine hits in five innings.

The Blue Jays narrowed the lead to 9-6 in the sixth. Carlos Delgado homered in the third. Tony Batista and Marty Cordova hit consecutive RBI doubles in the fifth, and Delgado and Raul Mondesi hit run-scoring singles in the sixth.

With two outs and two runners on the sixth, Batista almost tied it with a towering fly ball to the warning track in center.

Stan Javier added a run-scoring groundout in the seventh and Wilson hit an RBI double in the ninth.

Alberto Castillo hit a solo homer in the eighth. Batista and Jose Cruz Jr. hit solo shots off Kazuhiro Sasaki in the ninth for Toronto.

Game notes
The Blue Jays have lost six straight to the Mariners. ... There have been 18 home runs hit in five games at SkyDome. ... Wells threw just 89 pitches against Texas in his last start in the 10th shutout of his career. ... The attendance was 17,503. ... Martinez had a career-high seven RBI against the New York Yankees on July 10, 1995. ... Martinez, Wilson, Delgado and Castillo each hit their first homers of the season. ... Castillo tied his career-high with three hits.