Mc Gregor's downfall was that cardio and not an inability to compete with Mayweather.
Mc Gregor also forced Mayweather to step up his aggression and score the sort of impressive finish that Mayweather hasn't always delivered.
After the fight, Mayweather acknowledged that Mc Gregor was better than he expected.
Mc Gregor was positively glowing with enthusiasm, clearly pleased with the performance he delivered.
used his superior boxing skills and stamina to defeat a game but outmatched Conor Mc Gregor by technical knockout in the 10th round during a super-welterweight fight Saturday night in Las Vegas.