NEW YORK — Jorge Posada has a broken bone in his right foot that the New York Yankees say will sideline their star catcher for three to four weeks.

Posada, however, insists it won't take that long for him to return to the lineup.

Posada went for an MRI exam Wednesday, and manager Joe Girardi revealed the disappointing results following his team's 10-6 loss to Tampa Bay.

The 38-year-old switch-hitter, who has sat out the past three games, has a hairline fracture on the bottom of his right foot.

It's a major blow to the defending World Series champions, who were already missing three other regulars before backup outfielder Marcus Thames sprained his left ankle Wednesday night.

Thames is day to day.