Overeem was considered a heavy favorite over Silva, and was expected to make short work of the Brazilian by most MMA fans and journalists. In the first two rounds an obvious playfulness was apparent in Overeem's approach he picked and toyed with Silva.
There were multiple opportunities for Overeem to go for a TKO or KO on Silva and he simply did not swing at the giant. And shockingly in the third round, Silva landed a devastating combo of strikes that put Alistair down forcing referee Herb Dean to make the call on the stoppage via TKO.
In my opinion after rewatching the fight several times, I believe that Overeem's complete lack of respect for Bigfoot's power and his unwillingness to go for the finish, so he could toy with Silva, is what really defeated Overeem. Overeem's going to have a lot to work on, including learning how to respect opponents.
There have been talks of a possible fight between Overeem and JDS, to which I will definitely be looking forward to. Despite his loss, I still consider Overeem one of the most dangerous heavyweights in the UFC and in the sport of MMA as a whole.
(I mean no disrespect to Bigfoot, he took the win because he kept his composure and capitalized like any good fighter would. Hats off to the big man.)