Yanks' Teixeira hit on knee by pitch

Mark Teixeira has left the New York Yankees' game against Boston in the first inning with a bruised right knee after being hit by a pitch from Jon Lester.

X-rays were negative and Teixeira will be re-evaluated Wednesday.

Batting right-handed, the switch-hitting first baseman was struck squarely on the kneecap. Teixeira screamed in pain almost immediately and fell at home plate, rolling back and forth in the dirt with one hand on his knee.

Teixeira could put little weight on his leg and was helped off the field. He limped gingerly down the dugout steps.

Jorge Posada came in to run for Teixeira.

Three batters later, Lester hit Russell Martin with a pitch above the right knee. Martin walked to first base.