Rodriguez had been slated to play third base, batting third, as the Yankees opened a three-game series with the Blue Jays. He remained in the same lineup spot, but Eric Chavez -- batting eighth -- moved from DH to third base.
"Alex woke up with a little stiff neck," said manager Joe Girardi. "He tried to work through it. He took ground balls. It was on his right side, so he was able to turn left, but it was hard for him to turn [right], and when he would throw, it would seem to aggravate it. There's a good chance he'll DH tomorrow. Hopefully it clears up, but there's a good chance [DHing again] might happen."
Rodriguez went 2-for-4 with two runs scored in the Yankees' 6-3 win over Toronto on Monday. He has 13 hits in his past 34 at-bats, and he's 6-for-17 on the homestand.