He needs an Oscar for this agonizing performance that even fooled the replay officials

MLB's replay system still needs some work because this guy just beat it.

I'm still trying to figure out how Derek Dietrich beat MLB's replay system with an amazing acting job on this hit-by-pitch.

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Dietrich pretends to have been struck in the elbow—his left—on an errant pitch from Diamondbacks pitcher Jake Barrett. He does a great job selling the hit, but a review of the pitch showed the ball hit the knob of the bat.

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Simple enough to overturn, right? Not really, as Diertrich can apparently fool everyone enough to think that even being grazed in the right hand could cause an injury to his left elbow.

Maybe MLB needs to upgrade their cameras. Higher vid resolution could end all speculation on a call like this.

[h/t FTW]