Masvidal took the fight on short notice, but he's been training and keeping in shape. Mike Brown will not be in his corner as he tested positive.
Per MMA Junkie:
"Poirier, who trains with Masvidal at American Top Team, says Masvidal has been at the gym the entire time and helped him prepare for his fight against Dan Hooker, which Poirier won 11 days ago at UFC on ESPN 12. Masvidal also been training with high-level wrestlers such as three-time NCAA Division I champion Bo Nickal."
Weighing In Podcast (Big John and Josh Thompson) talked about it on Monday. Bo Nickal is a beast at wrestling, much bigger and stronger.
Usman will have to take him down as much as he can, no way he can stand with Masvidal. Bo Nickal was able to take Masvidal down, but the dude kept getting right back up. This will be a good fight.