Thurman here is building his name since he just came back from injury, he won his last fight but he did not dominate that fight although he won via unanimous decision.
Pacman, if will loss lose on that fight will still goes for a 1-2 more fights.
I'm 100% sure that he will asked for rematch if he will loss on this match. And Thurman, will gladly accept it again since it's money after all. But apparently, the way Pacquaio is showing at the practice, he still the Pacquiao the team knows that shows no signs of slowing down. Not that they are positive but what they see is real.