Kiermaier didn't hesitate to take the blame.
"Honestly, the way Donaldson was playing off the bag, I just thought they were giving it to me," Kiermaier said. "I didn't think they were going to attempt to throw. I took a look a couple of other times, and it just looked like they weren't interested in what I was doing.
"Terrible baserunning move on my part. Very embarrassing. I know the game better than that. But when you assume certain things like that, I just assumed they were going to let me have the bag. Didn't happen, and terrible baseball move on my part."
Bill Chastain is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.