LONDON -- Carlos Alcaraz and doubles partner Jakub Mensik gave Team Europe a 3-1 lead over Team World after the opening day of the Laver Cup on Friday.
Alcaraz and Mensik beat Alexander Bublik and Taylor Fritz 6-4, 6-4 in the final match of the day at the O2 Arena.
Rafael Jodar had broken a 1-1 deadlock after the day session by defeating Bublik 6-2, 6-3 in the evening's singles match.
In the day session, Brandon Nakashima made the most of his Laver Cup debut by beating Mensik 6-1, 3-6, 10-7.
The 16th-ranked Nakashima was a late addition to Andre Agassi's roster after U.S. Open runner-up Ben Shelton withdrew last week.
In the event's opener, Casper Ruud beat Francisco Cerundolo 6-7 (4), 6-4, 10-8 to give Europe an early lead.
There are four matches per day in the three-day event.
Wins are worth one point on Friday, two points on Saturday and three points on Sunday. The first team to reach 13 points wins.
Europe has won the Laver Cup five times while Team World took its third title in last year's edition of the Ryder Cup-style event.
