"We'll evaluate him once again when we get home tomorrow," manager Bob Melvin said Sunday morning. "He feels a little better, but it's tough to really get a grasp on it until he really takes off."
The A's still believe Punto will not need to go on the disabled list.
"He seems to think so, but I think a guy like him is usually a little more enthusiastic about that," said Melvin. "But I'd like to think we can avoid it. I'm just not 100 percent sure."
Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.