Yankees manager Joe Girardi said Wednesday that the initial report from an MRI exam on Nady's elbow "is not good."
Nady felt a sharp pain while making a throw in the seventh inning of Tuesday night's 7-2 win over Tampa Bay. He had elbow ligament replacement surgery on Sept. 29, 2001.
Also, Girardi said it's possible that injured third baseman Alex Rodriguez, who had right hip surgery just over five weeks ago, could start taking batting practice by this weekend. A-Rod is expected to rejoin the team by May 15.
Struggling right-hander Chien-Ming Wang, who is 0-2 with a 29.38 ERA in two starts this season, threw a 21-pitch batting practice session. He has had trouble keeping his pitches down in the strike zone, and worked on slowing down the left leg during his delivery.
Third baseman Cody Ransom, filling in for Rodrgiuez, and designated hitter Hideki Matsui were both out of the lineup against the Rays for the second straight game. Ramiro Pena started at third, while starting catcher Jorge Posada was the DH.