Hey guys Dbacks fan here. I've sorta adopted the Tigers as my AL team. I've watched 3 or 4 games all at Comerica park this season and each time i've noticed a cutout in the right field fence near the foul pole. Does anybody know what that is for? I'm pretty sure some other AL parks have them also (Tampa?). Thx in advance! Fun fact: Comerica park and the Dbacks' Chase field are the only 2 parks to have keyholes (the strip of dirt from home plate to the pitchers mound).
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