Baltimore ? First, Pedro Martinez turned in a performance that proved his shoulder is not a cause for concern.

Then he hammered home the point.

Boston pitcher Pedro Martinez delivers against Baltimore. Martinez, who was injured most of last season, won for the first time since last May on Sunday at at Baltimore.

“I hope that everyone chills now. I’m not 100 percent strong yet, but I’ll get there,” he said.

Martinez won for the first time since last May 30, rebounding from an awful opening day stint to pitch six strong innings Sunday and lead the Boston Red Sox over the Baltimore Orioles 4-1.

Martinez (1-0), coming off a season shortened to 18 starts by shoulder pain, allowed one unearned run and three hits, struck out five and walked one. Shea Hillenbrand backed him with a pair of two-run homers.

So much for the idea that Martinez is dragging a sore shoulder to the mound.

“My health, thank God, I believe it’s here,” he said.

Although he was pitching against a team in a horrid hitting slump, it was a vast improvement from Martinez’s first outing, when the right-hander gave up seven earned runs and nine hits in three innings against Toronto.

“The reports we were getting was that his fastball was not as explosive as it had been,” Orioles manager Mike Hargrove said. “Obviously, he had a real good fastball today.”

The three-time Cy Young Award winner allowed only one runner past second base and retired his final seven batters. Martinez threw 85 pitches, 54 for strikes, in lowering his ERA from 21.00 to 7.00.

Martinez had been winless in his previous eight starts.

Ugueth Urbina pitched the ninth to earn his third save.

Baltimore has lost five straight.

Yankees 7, Devil Rays 2

New York Roger Clemens completed a near-perfect turn through New York’s rotation, allowing one earned run in 713 innings as the Yankees swept Tampa Bay.

Jason Giambi drove in his first run with the Yankees and Derek Jeter had three hits and three RBIs for New York, which has won five straight since losing on opening day in Baltimore.

Yankees starting pitchers had not allowed a run since that game until the Devil Rays scored an unearned run in the sixth. That snapped New York’s 23-inning scoreless streak and a 3313-inning stretch by the starters.

Giambi, 3-for-21 this season, got a standing ovation after his run-scoring single in the eighth.

Indians 5, Tigers 1

Detroit C.C. Sabathia’s no-hit bid was stopped by Randall Simon’s single leading off the eighth inning. After Simon lined a single to center on the first pitch of the eighth, Jose Macias hit into a double play. Sabathia (1-0) struck out two and walked two. Bob Wickman earned his third save.

At 0-6, the Tigers are off to their worst start since 1992.

Jeff Weaver (0-2) allowed three runs in 723 innings.

Twins 10, Blue Jays 6

Toronto Corey Koskie hit a three-run homer in the first inning and Torii Hunter also had three RBIs as Minnesota won their third straight, beating Toronto. Dustan Mohr and David Ortiz also homered for the Twins.

Athletics 6, Mariners 5

Seattle Rookie Carlos Pena hit his fourth home run, and Eric Chavez returned to the lineup with a homer and three RBIs as Oakland beat its AL West rivals. Tim Hudson (1-0) pitched six solid innings, allowing one run and four hits.

Rangers-Angels ppd.

Arlington, Texas Texas’ game against Anaheim was rained out. With the Rangers off today, they have plenty of time to think about a 1-5 start the team’s worst since 1987 that can be blamed more on meek hitting than weak pitching. Alex Rodriguez, Juan Gonzalez, Rafael Palmeiro, Ivan Rodriguez and Carl Everett are a combined 27-for-130 (.208). The Rangers are hitting .225 with 22 runs.