Mayweather stops McGregor with 10th-round TKO to go 50-0

Floyd Mayweather celebrates his TKO victory over Conor

Floyd Mayweather started slowly, but came on strong in the middle rounds and defeated UFC star Conor McGregor with a 10th-round TKO. Referee Robert Byrd stops it at 1:05 of the 10th as McGregor was completely gassed and Mayweather took advantage. Mayweather, 40, improved his record to 50-0 to surpass Rocky Marciano’s mark of 49-0.

Here’s a round-by-round update of the highly anticipated fight. Mac is McGregor and May is Mayweather, in case you wondered.

Round 1: They come out with Mac on the attack. May being defensive, left by Mac misses. Mac goes for the body, Not much action here. Mac does some hot-dogging with holding his hands behind his back. Floyd throws first jab. 30 punches by Mac and catches May with a counter left uppercut. Floyd looks to be waiting for Mac to punch himself out. First round to Mac.

TKO: Mayweather weathers McGregor for 10th-round stoppage

BREAKDOWN: Three keys to Mayweather’s win over McGregor

ROGERS: Fight tells more about sports fans than it does fighters

DONE: Mayweather says he’s retiring ‘for sure’ after McGregor win

LEGEND: Mayweather salutes Marciano after improving to 50-0

Round 2: Mac has him in the corner and throws a hammer fist and Byrd stops it and warns him. May connects. They’re in the middle of the ring. Little movement from May. Mac switches stances and connects. Mac throws combination that lands. May doing little work. Mac goes to the body with a left hand. Mac finds success jabbing. He roughs up May. Mac grabs May around the waist and throws a punch. MMA tactic. Another round for McGregor. 2-0.

Round 3: Mac gets him in the corner and throws another hammerfist punch on top of the head. More punching on top of the head. Mac definitely using MMA tactics, which in boxing are dirty. Mac throws a left and misses. May lunges in. This is kind of awkward. Left uppercut by May, then he scores with two jabs. May connects with a right. Mac switches stances while throwing, a nifty move. Again, Mac hits May on top of the head, but Byrd doesn’t see it, apparently. Mayweather starting to move and throw more. But another McGregor round 3-0.

Round 4: Mac gets May on the ropes and attacks. May doesn’t look like his old self — yet. Left by Mac lands  but May counters with a right. And another right. May trying to get on the inside to keep Mac out of his comfort zone. May combo, and Mac throws some jabs. Counter left by Mac scores. Mac hits on top of the head again. Left uppercut lands.  May having trouble getting his punches off. This is a very slow start by May. Another very close round but I give it to Mac. 4-0.

Round 5: Mac starting to breath hard but still looking good. May can’t seem to get his punches off. The awkwardness seems to puzzle him. May lands a left. Right by May then he shoves Mac at the end of the round and is scolded by Byrd. Close round again. I have Floyd taking his first round, but very close. 4-1.

Round 6: May goes to the body with a right. Floyd throws an overhand right and he’s starting to find his range. May gets a combination but Mac counters with a left hand. Mac sticks his tongue out at Mayweather. Floyd puts his head down but comes back to land another right. He’ starting to assert himself. Good round for Floyd. 4-2 Mac.

Round 7: This is where you expect Mac to start to get gassed, and apparently he is. Not a lot on his punches right now. Neither fighter is throwing bombs. May right hand scores. Another lead right by May lands. Two more rights by May. He’s finding the target. Another one followed by a jab. This is not the McGregor that Jose Aldo remembers. May has another good round. 4-3 Mac.

Round 8: Mac hits on top of the head again. May turns around. Mac still acquitting himself well. May starting to walk Mac back. Fighters in a clinch. Mac breathing through his mouth. Left to the body by Mac. Left uppercut by May. Combo by Mac lands nicely. Very close round. Could go either way but I give it to Mayweather to tie it up.

Round 9: Mac comes out and throws a body shot that might have hurt May, then is warned by Byrd. May comes forward and attacks, then lands with a big right. Right hand by May to the face lands. They clinch again. You can see Mac becoming really gassed as Mayweather goes after him. Mac is holding on to stay up. Mac looks like he’s ready to drop and holds May. May attacks, this is almost a 10-8 round, but not quite. McGregor can barely move from fatigue. Big round for May. 5-4 Mayweather.

Round 10: Mac really looks fatigued as he has gone farther than he ever has in a UFC fight. Floyd has McGregor on the ropes and unloads on him before Robert Byrd stops it. McGregor unable to defend himself. Floyd wins by TKO in the 10th. Great comeback after a slow start.

Floyd Mayweather works Conor McGregor against the ropes