Yankees' Joba Chamberlain only has himself to blame for potentially career-ending injury  —  Reliever has long been undisciplined off field  —  Joba Chamberlain burst on the scene and now his pitching career may have met its end.  —  TAMPA — So the Joba Chamberlain star-crossed era …

Power struggle may weaken Sox right off the bat  —  The division of the Red Sox isn't limited to Saturday's split-squad games against the Miami Marlins and Philadelphia Phillies.  —  A wedge appears to be forming between new manager Bobby Valentine and new general manager Ben Cherington …

Short-handed Phillies will still be a contender  —  Pitching should overcome injuries to Howard, Utley in NL East  —  Charlie Manuel is talking small ball.  Taking the extra base.  Bunting.  Swiping a bag here and there.  —  Oh, Charlie, has it really come to this?

Yankees might not finalize rotation until the end of spring training  —  New York Yankees manager Joe Girardi said his rotation might not be finalized until the end of spring training.  —  Ivan Nova, Phil Hughes, Michael Pineda and Freddy Garcia are competing for three spots behind opening day starter CC Sabathia and Hiroki Kuroda.

Chipper will start year on DL after knee surgery  —  Slugger hopes to be back for Braves home opener April 13  —  DUNEDIN, Fla. — Chipper Jones will begin the final season of his career on the disabled list.  The Braves third baseman will undergo surgery on Monday to repair a torn meniscus in his left knee.

Mets interested in dealing Pelfrey.  Good luck with that  —  The Mets would like to trade Mike Pelfrey, sources say.  However, the likelihood of finding a taker considering his abysmal spring and high salary seems remote.  Pelfrey has a 14.90 ERA this spring.

Rangers reinvigorating DH position  —  It used to be that All-Stars were bestowed the title of “DH” as a late-career master's degree.  Familiar names received handsome salaries to take four at-bats per game into their baseball dotage.  —  As recently as the 2007 season, the likes of Frank Thomas …

Cardinals ace Chris Carpenter out indefinitely  —  JUPITER, Fla.—Chris Carpenter has nerve irritation that has caused weakness in his pitching shoulder and the St. Louis Cardinals' ace will be sidelined indefinitely.  —  The Cardinals made the announcement Friday, after Carpenter was evaluated in St. Louis this week.

Prosecutors: Pettitte to testify in Clemens trial  —  Andy Pettitte will testify in the upcoming Roger Clemens perjury trial about his own use of human growth hormone, federal prosecutors said on Friday.  —  In court papers released Friday, the prosecutors outlined their plan for Pettitte …

Leyland has no plans of calling it quits  —  BRADENTON, Fla. — Jim Leyland's return to the home of his first Spring Training as a manager set up the question of whether this could be his last spring in the big leagues.  He isn't planning on it.  —  Asked by a writer how he wants to be remembered, Leyland was ready with a quip.

Three left in bidding for Dodgers  —  It is down to groups led by billionaires Steven Cohen and Patrick Soon-Shiong; Magic Johnson and Stan Kasten; and Rams owner Stan Kroenke.  MLB owners are expected to vote next week.  —  Billionaire philanthropist Patrick Soon-Shiong, left …

Back in force: Kendrys homers in 2nd game  —  GOODYEAR, Ariz. — Kendrys Morales rounded the bases at Goodyear Ballpark on Friday night and crossed home plate without incident following a second-inning home run.  The same could not be said nearly two years ago, when the Angels designated hitter last cleared the fence.

Bats can't back solid Harang in loss to KC  —  SURPRISE, Ariz. — Right-hander Luke Hochevar had his strikeout pitch working to perfection on Friday as the Kansas City Royals topped the Los Angeles Dodgers, 2-0, while 6,769 fans watched at sun-splashed Surprise Stadiium.

Torre returns to MLB baseball operations job  —  Joe Torre, who left his post in January to pursue a potential ownership opportunity with the Dodgers, has returned to Major League Baseball as an executive vice president for baseball operations.  —  Torre, best known for managing the Yankees …