Frances Tiafoe has put Team World ahead at the Laver Cup with a victory over Daniil Medvedev. The American won 3-6, 6-4 and 10-5 in the third set which is a match tiebreaker.

Carlos Alcaraz suffered defeat on his Laver Cup debut, as he was beaten in straight sets alongside Alexander Zverev in doubles by Taylor Fritz and Ben Shelton.

Team World and Team Europe were level after victories by Argentina's Francisco Cerundolo for Team World and Stefanos Tsitsipas of Greece for Team Europe on the first day of the Laver Cup tournament at the Uber Arena on Friday.