BOSTON (AP) -Red Sox pitcher Jon Lester, whose 2006 season was cut short because of lymphoma, will remain at Triple-A for now.
The Boston left-hander was optioned to Pawtucket on Monday after being activated from the disabled list. He felt a muscle cramp in his left forearm on May 2 and began a rehabilitation assignment on May 19.
In his last appearance, Lester gave up three runs and five hits in 2 2-3 innings last Saturday against Ottawa.
With the Red Sox getting solid pitching from all five starters and having the best record in the majors, they kept Lester at Pawtucket.
Only one Boston starter has missed a game due to injury. Josh Beckett was out for two starts; Curt Schilling, Daisuke Matsuzaka, Tim Wakefield and Julian Tavarez have taken all of their turns.
Lester began the season on the 15-day disabled list while continuing to come back from lymphoma, which was diagnosed last summer and led to offseason treatment.
As a rookie last season, Lester was 7-2 with a 4.76 ERA for Boston.

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