Posada (right hamstring strain) was placed on the 15-day disabled list on May 5, with Molina (strained left quadriceps muscle) following just three days later. Ransom is on the 60-day DL with a strained right quadriceps muscle suffered April 25, and his rehab is further behind.
In the wake of injuries to their top two catchers, Girardi has been impressed with the performance of rookie Francisco Cervelli and free-agent signee Kevin Cash.
"They've work well with our pitching staff," Girardi said. "They've done a nice job of calling games, blocking pitches and taking charge. So we've been happy with what they've done. These two have stepped up. "
Nady, who has been on the DL since April 16, has missed the most time of any Yankee and is anxious to get down to Tampa.
"It's very exciting," Nady said while softening his glove, in hopes that he will be back on the field this week.
Yankees reliever Brian Bruney is equally restless to get back to game action. After making his debut off the DL with one inning on Tuesday, Bruney reported soreness in his right flexor tendon -- which was previously strained -- prior to Thursday's game.
Although an MRI came back negative, Bruney said on Saturday that his tendon is still sore. He will play catch Sunday in hopes of coming back early next week.
"There's no guarantees, [we're] just going to play it by ear," said Bruney, who has made no secret of his frustration. "I just have to go out, do my work and try to get better."
Brittany Ghiroli is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.