Bad break for the Nationals on this one. Adam LaRoche took Cliff Lee deep over the wall at Citizens Bank Park. Unfortunately, it hit flush with a small fence on top of the wall, bounced straight up and back onto the field. Jayson Werth thought it was a home run. Adam LaRoche thought it was a home run. The MASN booth thought it was home run. The umpires did not think it was a home run.
Both Werth and LaRoche broke into their home run trots, neither scoring, and LaRoche was tagged out after what replay later confirmed was a correctly called double.
h/t Mike L.