"He took a swing -- it was actually the very first swing he took down in the cage [before Game 1]," said manager Terry Francona. "His neck just spasmed up. He tried to loosen it up. He kind of went about a normal day. It just wasn't happening. He was getting worse. I don't know. We'll see."
Crawford didn't play on Sunday, but he was a healthy scratch on a day ace lefty David Price was going for the Rays.
Crawford didn't show any signs of a stiff neck when he pinch-hit in Sunday's game, belting a double against J.P. Howell.
In his first season in Boston, Crawford has struggled mightily, hitting .255 with 11 homers and 53 RBIs.
Darnell McDonald replaced Crawford in the lineup in Game 1 and batted ninth. Conor Jackson started the nightcap in left, while McDonald played right against lefty starter Brian Matusz.