The Los Angeles Angels gave their starting rotation a boost on Friday night, acquiring Tampa Bay Rays left-hander Scott Kazmir for third baseman Matt Sweeney, left-hander Alex Torres and a player to be named later.

While Kazmir has been solid in his last three starts, his velocity is down and he’s always an injury risk. Still, this move gives the Halos much-needed depth in their starting rotation and they also net a pitcher who has plenty of experience against the Yankees and Red Sox. (Two teams the Angels could face in the postseason.)

For the Rays, Kazmir never panned out to be the ace the club thought he would become when they acquired him from the Mets earlier this decade. Injuries have limited his effectiveness, although he still owns a career ERA of 3.92. He’s also the club’s career leader in wins, strikeouts and innings pitched.

Overall, Tampa gets significant salary reliever in the trade by shedding most of the three-year, $28.5 million extension Kazmir signed in May of last year.

They also get a solid strikeout prospect in Torres, who can pitch for the groundout and has been largely overlooked in the Halos’ organization. Sweeney has 25-30 home run potential, but an ankle injury cost him virtually his entire ’08 season and he’ll have to work his way up from High-A ball.