"Something was wrong, because I couldn't walk right," Posada said while sporting a boot on his right foot after the Yanks' 10-6 loss to the Rays on Wednesday. "I've never had a problem with my feet before. This is something where you have to transfer your weight from one side to the other. This is something we have to take care of. I can't really do too much."
Posada suffered the injury on Sunday when a foul tip off the bat of Michael Cuddyer struck him on the foot. He had not been in the lineup since. Manager Joe Girardi provided the timetable of three to four weeks, while Posada said he would be back sooner than that.
"They can say whatever they want to say," Posada said. "I'll be here before that."
This is the third consecutive season that Posada will hit the disabled list. He made two trips to the DL in 2008 for a shoulder injury that limited him to 51 games and eventually required season-ending surgery. Last year, he missed three-and-a-half weeks with a hamstring strain.
Girardi said he foresees Francisco Cervelli continuing to get the majority of at-bats in place of Posada. Cervelli has already made a good impression this season in his 17 starts, batting .375. He hit .298 last season in two starts.
"Jorge has been a leader," Girardi said. "It's something that we dealt with last year. [Kevin] Cash and [Cervelli] came up big and did a good job, and we're going to need someone else to come in and do a good job for us."
Posada's injury is both the latest and the most serious in a rash of injuries this month for the Yankees. Curtis Granderson is on the disabled list with a groin strain, Nick Johnson just underwent wrist surgery, Andy Pettitte has missed a start and outfielders Nick Swisher and Marcus Thames are both day-to-day with a left biceps strain and sprained right ankle, respectively.
"Injuries happen. You hope you don't get them at the same time, but you can't feel sorry for yourself," Derek Jeter said. "Other guys have to pick it up. That's what has to happen."
Girardi wouldn't reveal how the Yankees would replace Posada on the 25-man roster. The team does not currently have another catcher on its 40-man roster. Prized prospect Jesus Montero is catching for Triple-A Scranton/Wilkes-Barre, but it seems more likely that the Yankees would call up veteran Chad Moeller to back up Cervelli.
Posada is hitting .326 with six home runs and 14 RBIs in 16 games this season.