Awesome and intriguing matchup. Gonna go with Sergio UD, or possibly late stoppage. I think his speed, tenacity and sharp power would get to JT eventually. However, obviously JTs size and physicality would make things dangerous and interesting. I think maybe JT probably wins the early rounds, but as he falls into a predictable routine, and Martinez begins to adapt, Martinez's speed and power begin making their mark, and I think Sergio takes control and keeps it in the championship rounds. Possibly dropping JT late. That being said, a JT win shouldn't be an outright surprise, though I do think it would be an upset.
Depends what version of both fighters would have turned up. This content is protected t the time This content is protected aylor first This content is protected on the title he would win, at the time Sergio first won the title he would have won. It would have been interesting at either of those two occasions though and obviously there was a time in between their two reigns where it could go either way.