The Yankees may be without Mark Teixeira for as long as two weeks after he suffered a Grade 1 strain of his left calf.

Teixeira suffered the injury on Monday night against the Blue Jays. It initially occurred when Teixeira ran out of the box on a foul ball in the fourth inning. He stayed in the game and the muscle tightened up on the bases.

Derek Jeter suffered a Grade 1 calf strain last season and spent nearly three weeks on the disabled list.

With Teixeira sidelined, the Yankees will play Nick Swisher and Eric Chavez at first.