Mayorga was never a great boxer either, but apparently came into his MMA debut 20lbs over the 155lb weight limit.  Here is a description of the fight via BloodyElbow

Mayorga was taken down by Tiffer after his opening salvo of punches and spent the vast majority of the bout’s 10 minutes clinging to Tiffer, who held full mount and did little with it. On the sporadic occasions of Mayorga’s escape, he was taken back down immediately after attempting to punch, right back into full mount.

The awkward-yet-tepid bout finally saw drama in the late second round when Mayorga bucked to escape from mount and rolled into a triangle armbar from Tiffer. Mayorga toughed his way through the hold and freed himself from Tiffer’s subsequent armbar attempt with what appeared to be an illegal knee to the spine just before the round ended. Referee Milton Rosales Toshi did not call a foul, but after consulting with the cageside physician, Tiffer was deemed unfit to continue, giving Mayorga his first MMA win by stoppage at the end of the second round.

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