Teixeira left Thursday's game after Boston's Alfredo Aceves hit him with a pitch. He sat out Friday and Saturday's games against the Blue Jays, but reported improvement Saturday and told manager Joe Girardi he was ready to play Sunday.
"He came in today and said he's good to go," Girardi said Sunday. "I didn't even ask him. He came in and said, 'I'm good to go,' before I had a chance to ask him. I said, 'First?' and he said, 'Yes, first.'"
Nick Swisher had been playing first base in Teixeira's absence, but he moved back to right field. Andruw Jones, who had been in right, moved to left field for Sunday's game. Brett Gardner started in center field to rest Curtis Granderson, who was due for a day off.
Teixeira and Alex Rodriguez, who returned Saturday from a thumb injury, batted in the same lineup for the first time since the first game of a doubleheader in Baltimore on Aug. 28. But Girardi also appreciates the return of Teixeira's defense.
"He's got so much experience over there," Girardi said. "Every play you know he's going to be in the right spot. Swish does a great job in his absence, though. He really did. Swish enjoys playing there once in a while. He always tells me, 'I can play first today if you want.'"
Teixeira entered Sunday hitting .248 with a .345 on-base percentage and 35 homers in 134 games.