Wanderlei Silva, the coach of the latest season of The Ultimate Fighter: Brazil and a well-respected, accomplished but rickety-old fighter, is out against Chael Sonnen at UFC 175. His replacement: Vitor Belfort. The source is a report on Combate, a site that’s part of Globo, a reliable news outlet in Brazil. (You can read the report if you want, but it’s in Portuguese, and running it through Google Translate makes for some pretty nonsensical stuff that I won’t bother reprinting here.) UFC 175 is slated for July 5 in Las Vegas, N.V.

A few things about this news are worthy of some “Huh? What’s going on here?”-type reactions.

First, was Silva really ever going to fight Sonnen? Their bout was initially postponed because of a back injury sustained when they scuffled on on set, and now this. The reason for the bout being off is, of course, the fact that Silva failed to show up for his medical exams.

The second big head-scratcher is Belfort. Wasn’t there an issue with a surprise drug test he was forced to take in Nevada a few months ago? Also, he was originally supposed to fight UFC 175 headliner Chris Weidman for the belt, but pulled out because of the TRT ban and his need to acclimate himself to fighting without the Super-Soldier Serum coursing through his veins. Now he’s back on the card? Was his recovery miraculous?

So many questions to be answered, but one thing is sure: UFC 175 is still must-see TV.