Philadelphia Phillies left fielder Aaron Altherr may only be a rookie, but he certainly made a name for himself Friday night against the Washington Nationals.
During the top of the third inning with the bases loaded, the 24-year-old Altherr hit a liner to center field off pitcher Jordan Zimmermann. Nationals outfielder Michael Taylor attempted to make a highlight-reel diving catch but failed. The ball rolled back to the center field wall, allowing Altherr to clear the bases and book it home.
We haven't seen anything like this since 1999.
Aaron Altherr's inside-the-park grand slam is the 1st in MLB since Randy Winn did it for the Devil Rays against the Yankees on Oct 3, 1999
— ESPN Stats & Info (@ESPNStatsInfo) September 25, 2015
Altherr also hit a solo home run in the fifth inning.