Here’s what Fighters Only wrote:
Junior Dos Santos does not remember most of the UFC 166 fight with Cain Velasquez. Afterwards he was under the impression he had been knocked out in the second round. His corner believe he fought from round two onwards “on autopilot”.
Fighters Only also says dos Santos doesn’t remember doing his post-fight interview with Joe Rogan.
Dos Santos went to the hospital after the fight and reportedly received stitches over his right eye and left ear.
Dos Santos is now 16-3 and has lost two of his three fights with Velasquez. JDS won their first meeting with a first-round knockout on UFC on FOX in 2011. He was dropped in the third round on Saturday and managed to avoid a stoppage then, but referee Herb Dean stepped in with under two minutes left in the fight after JDS was plowed into the mat head-first. It sounds to me like he was concussed pretty badly in the fight and suffered some serious trauma to the head.