Scapegoat
The iron never lies
I agree. McGregor took some hard shots to the body & head & that also slowed him down. That's in addition to McGregor's volume of punches thrown.
I think that McGregor didn't realize that Mayweather was able to hurt him. McGregor thought he would win a point decision if he didn't get an early KO. 40 year old Mayweather looked just as strong in round 10 as he did in round 1.
MMA fighters simply don't train to go 12 rounds. It's a totally different type of conditioning.