Yankee Updates: Chamberlain, Robertson, Nelson

The Yankees have made some moves in the last couple of days that have affected their roster.

• Joba Chamberlain has been placed on the 15-day disabled list with a oblique strain. Chamberlain suffered the injury while warming up in the bullpen. Chamberlain will likely come off when he is elgibile as he has a history of recovering fast. 
• David Robertson has some discomfort in his left knee and will be out all three games against the Athletics. 
• The Yankees have acquired infielder Chris Nelson from the Rockies for cash or a player to be named later.
• Preston Claiborne has been called up from Triple-A Scranton/Wilkes-Barre to replace Joba Chamberlain. 
• Cody Eppley has been designated for assignment to make room for Claiborne on the 40-man roster.

The Yankees also noted that Curtis Granderson will be returning in the middle of May while Mark Teixeira aims at the end of May or early June.