How impressive is Gattis? 

September, 4, 2013
9/04/13
1:17
PM ET
Evan Gattis of the Atlanta Braves has certainly had an up-and-down season. His first two months of the year resulted in back-to-back NL Rookie of the Month honors, thanks to six homers and 16 RBI during each page of the calendar. Then the slumping began.

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