We're not one to point fingers but there's one clear favourite for who started this scuffle.
Nate Diaz is set to meet Michael Johnson on the main card of UFC on Fox 17,but the pair of lightweights almost exchanged punches in the fighter hotel 24 hours before the opening bell.
We don't know how this began, but an Instagram video posted on Friday shows Johnson approaching Diaz and the Stockton fighter shove Johnson away.
Coaches then rush in to dispel any tension and ensure that neither fighter did something stupid.
All this has done is make us even more excited for Saturday's Orlando show, the final UFC event of an amazing 2015 for fight fans.
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