Conor McGregor is a showman, a tough customer and a brilliant mixed martial artist. On Saturday night in Las Vegas he showed he could box too. But not nearly well enough to beat Floyd Mayweather, one of the all-time greats of the game.

Mayweather, out of retirement at age 40, won the fight on a 10th round TKO to take his record to 50-0. McGregor, a 4-1 underdog with bookies, but 100-1 with many boxing experts, proved he wasn’t hopelessly overmatched in a sport he had never before competed in professionally.

Mayweather’s strategy seemed to be to frustrate McGregor for long enough to exhaust him, then finish the job. It worked. “Our game plan was to take our time, then take him out at the end, down the stretch,” Mayweather said after the fight.

McGregor looked sharp in the first rounds, landing some blows, although also missing many because of Mayweather’s vaunted defense. As the rounds went by, though, he began to get sluggish, leaving openings for Mayweather to hit him again and again.