As expected there were no excuses at midnight on Saturday when Conor McGregor arrived back in the transformed ring to try and detail his disappointment under the close gaze once again of Floyd Mayweather.

Their boxing match had surpassed expectations, McGregor defied all of the wild predictions and Mayweather had looked older, slower and more desperate at times than at any point in his 21 years as a boxer.

It ended after 65 seconds of the tenth round with McGregor trapped, exposed and defiant on the ropes where he was sagging under Mayweather's furious onslaught. It was not a particularly dignified climax but the referee, Robert Byrd, got it about right as he cradled McGregor and Mayweather turned away in utter relief. It was the right ending because McGregor, at that point, had exhausted his hastily compiled index of boxing knowledge and was at the mercy of his cruel opponent. A smarter boxer might have been able to fiddle his way to safety from Mayweather's fists.

Floyd Mayweather vs Conor McGregor in pictures Show all 14 1 /14 Floyd Mayweather vs Conor McGregor in pictures Floyd Mayweather vs Conor McGregor in pictures Post-fight Floyd Mayweather celebrates his victory over Conor McGregor. Getty Floyd Mayweather vs Conor McGregor in pictures Mayweather vs McGregor Conor McGregor arrives in the ring first. Getty Floyd Mayweather vs Conor McGregor in pictures Round 1 McGregor shot out of the blocks to take the fight to Mayweather. Getty Floyd Mayweather vs Conor McGregor in pictures Round 2 McGregor looked calm and in control as he took the opening round. Getty Floyd Mayweather vs Conor McGregor in pictures Round 3 Mayweather started to fight back from the third round. Getty Floyd Mayweather vs Conor McGregor in pictures Round 3 McGregor was struggling to contain Mayweather and was warned numerous times by the referee. Getty Floyd Mayweather vs Conor McGregor in pictures Round 4 The UFC star struggled with the pace of the fight as his fitness levels waned. Getty Floyd Mayweather vs Conor McGregor in pictures Round 4 Mayweather was able to evade all of McGregor's attacks. Getty Floyd Mayweather vs Conor McGregor in pictures Round 5 Mayweather shoved McGregor after the ball at the end of the fifth. Getty Floyd Mayweather vs Conor McGregor in pictures Round 6 The Irishman started to glance regularly at the clock. Getty Floyd Mayweather vs Conor McGregor in pictures Round 7 Mayweather was landing big shots at will with McGregor showing no defence. Getty Floyd Mayweather vs Conor McGregor in pictures Round 8 More punishment was dished out on the eighth round. Getty Floyd Mayweather vs Conor McGregor in pictures Round 9 The fight was nearly stopped in the ninth as Mayweather had McGregor on the ropes. Getty Floyd Mayweather vs Conor McGregor in pictures Round 10 Referee Robert Byrd eventually waved off the fight in the tenth round. Getty

Mayweather will walk off into the boxing sunset at 40, with an immaculate record of 50 and zero and close to a billion dollars in career earnings. "I was just a kid of 19 from an urban background when I arrived here in Las Vegas," he said during an unusually moving final press conference. It really is the end and that is a great relief because it is too convenient to avoid his dreadful flaws in a fight he won so convincingly in the end. It might seem harsh to be so critical but when, like Mayweather, you have been the world's finest fighter for a decade it is important to paint the faults with the same glittering brush as the beauty we have all witnessed.

Mayweather picked McGregor apart as the Irishman tired (Getty)

Mayweather was slow, his timing in the first six rounds was bad and he was caught with sloppy shots by McGregor in the first three rounds. Mayweather's flaws made the mismatch, freak fight and circus main attraction so watchable and only a cold-hearted cynic would not stand and applaud the spectacle. The "what if" wonder at that moment - the end of the third - was impossibly high and a magic end briefly allowed his backers to dream. McGregor boxed, he stood tall, moved his feet, found gaps in the once impregnable defence and was three rounds up after three completed rounds. He was also getting tired and by the end of round five his questionable tank was depleting fast as he rushed backwards, grabbing and groping at Mayweather to avoid the real boxer's wild, wild lunges. "I made him fight like a Mexican," declared McGregor. He certainly did and he can be proud of that.

It is, I apologise, a cheap shot to say that this McGregor would have been smashed to bits by the Mayweather of a decade ago but it does need to be mentioned. Mayweather's performance was horrible at times, his own balance and legendary composure jettisoned in favour of looping shots to catch and hurt the rapidly fading mixed-martial-arts fighter. On the night it was enough, which is what we all knew, but nobody I know thought we would witness such reckless action from Mayweather; simply saying that you picked Mayweather to win in round 10 fails to tell the story of the extraordinary fight. It was, by the way, a privilege to cover.

Mayweather was unusually honest as he retired (Getty)