Rangers' Scott Feldman has surgery

Texas Rangers starter Scott Feldman had microfracture surgery on his right knee Wednesday and won't throw for three months. The club said he will be limited at the start of spring training because of the surgery.

Feldman, 27, was on the 15-day disabled list from Aug. 23 to Sept. 6 this season with a bone bruise in that knee after suffering the injury warming up for the seventh inning on Aug. 21 at Baltimore.

Feldman signed a three-year contract for about $14 million with a club option for a fourth year just before the 2010 season and was the club's Opening Day starter after winning a team-high 17 games in 2009. But his sinker was not nearly as effective in 2010 and he struggled with his control. He ended up losing his rotation spot early in the second half of the season and was moved to the bullpen. He did not make the postseason roster. Feldman was 7-11 with a 5.48 ERA in 141 1/3 innings in 2010. He had 75 strikeouts and 45 walks.

The club also outrighted Esteban German, Doug Mathis and Brandon McCarthy, meaning the team has 31 players on the 40-man roster. Three players remain on the 60-day disabled list: Omar Beltre, Eric Hurley and Guillermo Moscoso.

McCarthy was acquired after the 2006 season in a trade that sent John Danks to the Chicago White Sox. McCarthy's tenure with the Rangers was plagued by injuries.

Richard Durrett covers the Rangers for ESPNDallas.com.