SEATTLE -- The Boston Red Sox have added a much-needed starter after an earlier trade fell through, acquiring oft-injured left-hander Erik Bedard from the Seattle Mariners in a three-team deal at the deadline Sunday.

The Red Sox, whose deal for Oakland's Rich Harden fell apart late Saturday night, also got right-hander Josh Fields, a 2008 first-round draft pick.

"He was real tough on us," Boston manager Terry Francona said of Bedard, who started his major league career with the Baltimore Orioles.

"He's a guy who has shown he can pitch in the American League East. First half of the year before he tweaked that knee he was pretty solid," Francona said. "His stuff was good. We're excited."

Francona said he would talk to Bedard before lining up his rotation for the coming week.

"I know that (general manager) Theo (Epstein) talked to him and he sounded like he was excited. We'll kind of build him back up," Francona said. "He just came off the DL Friday. We'll build him back up and get him in there."

Boston sent catcher Tim Federowicz and right-handers Juan Rodriguez and Stephen Fife to the Los Angeles Dodgers, who dealt OF Trayvon Robinson to the Red Sox.

The Red Sox then sent Robinson and OF Chih-Hsien Chiang to Seattle.

Bedard, who is 4-7 in 16 starts with a 3.45 ERA this season for the Mariners, wasn't so good against an AL East team on Friday when he faced Tampa.