Towles, who went deep twice off Pedro Martinez for his first two homers of the season in a 10-3 loss, was originally awarded a double when his fly ball in the second inning caromed off the seats just over the top of the wall in left-center and came back onto the field.
"It's funny because at first I didn't see it," Towles said. "I saw it land, but I didn't see it come back into play. Then all of a sudden, I saw it. It had to have hit a pad and it stuck or something. I didn't know how that happened. I was talking to [Phillies shortstop] Jimmy Rollins, and he said it was a home run."
Towles stopped at second, but interim manager Dave Clark immediately paid a visit to the umpires and was granted a video review. It only took a few moments for the umpire to signal home run, and Towles completed his trot.
"It worked out well for us," Clark said. "When the ball was hit, I saw it go over the fence. I didn't know if it actually hit the top. I thought it went over and I thought it went in the flower beds and came back. But it was time for me to go question it, and it went our way."
The homer was Towles' first since April 19, 2008, a span of 152 at-bats. He didn't wait nearly as long for his next homer, driving another pitch over the wall in left-center in his next at-bat in the fourth. There was no replay needed this time.
"They said hitting in that eighth spot and you have the pitcher behind you, you're not going to get as much to hit, so whenever you get something, don't be waiting for that perfect pitch," Towles said. "Maybe jump on something away even though you'd rather have a ball in, because you get yourself in a hole."
Brian McTaggart is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.