Amir Khan's sharper punching (landed 46% of his power punches) was the difference. Chris Algieri moved forward all fight (throwing 97 more punches than Khan) and landed flush several times, but never managed to dent Khan's suspect chin.

New York - Britain's Amir Khan took a unanimous decision victory over American Chris Algieri in a welterweight matchup, then called out unbeaten Floyd Mayweather for a world title showdown.

Khan improved to 31-3 with his fifth victory in a row, which came by judges' scores of 117-111, 117-111 and 115-113.

Algieri fell to 20-2 with his second defeat in a row, the other coming last November at Macau at the hands of Filipino star Manny Pacquiao -- who lost to treble world champion Mayweather in boxing's richest-ever megafight earlier this month.

"Amir Khan wants to fight Floyd Mayweather," Khan screamed in the ring. "I want that next. I'm number one World Boxing Council (challenger). He's the champion. So let's make it happen."

That might be easier said than done. Khan thought he might fight Mayweather in May last year but the US star instead decided to fight Argentina's Marcos Maidana.

Khan kept Algieri at bay much of the night, the American landing a strong combination early in the eighth round but unable to connect often enough to claim victory.