The Tigers said Martinez was taken for X-rays, which came back negative, and will be re-evaluated Sunday.
"We'll see about it tomorrow," Martinez told reporters, according to MLB.com. "I know as much about it as you guys do. It's good that I'm able to move on it."
Martinez suffered the injury when he stumbled while making a catch in the first inning Saturday.
"I tried to slide and catch it, and then I realized that I was gonna catch it in the air," Martinez said. "So then I tried to put my foot in to catch it, and I just kind of rolled my foot a little bit."
Martinez, 29, batted .307 last season with 22 home runs and 68 RBIs.