Per LoHud Yankees Blog:
Damn. This isn't as big a blow as it seems on one hand, since Swisher is better...but this kills the depth. Get used to a lot of Melky Cabrera, especially since Matsui can't play the field until June and Posada is eating up the DH spot. Ugh.BREAKING NEWS UPDATE, 12:55 p.m.: Nothing official yet, but the word is that Xavier Nady will need surgery and miss the season.