But manager Matt Williams insisted that the ball went over the fence for a three-run homer. The umpires decided to look at the replay, and after one minute and 57 seconds, the call was overturned and Zimmerman had his third homer of the season.
The replay showed the ball went over the fence and into the flower garden before bouncing back on to the field.
"I'm glad I didn't get robbed. It's nice to have a real hit and be rewarded for it," Zimmerman said.
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the Time. He also can be found on Twitter @WashingNats. This story was not subject to the approval of Major League Baseball or its clubs.