Each team is comprised of six players, and led by a team captain, who is a legend of the sport. The captain of Europe is Bjorn Borg, and the captain of Team World is John McEnroe. Three of the six players qualify based on their ATP singles ranking as of the Monday following the French Open. Three are captains, announced by the start of the US Open. LAVER CUP FORMAT The event is played over three days. On Friday and Saturday, there is a day and night session followed by a final single day session on Sunday. Each day four matches are played three singles and doubles. Both singles and doubles are the best of three sets with ad scoring. In the event of split sets, the third set is a 10-point match tiebreaker. Each player competes in at least one singles match during the first two days. No player can play singles more than twice during the three days. At least four of the six players must play doubles. No doubles combination is played more than once, unless for the Decider on Day 3 if points are 12:12. The winning team must reach 13 points. In the event of a tie after all 12 matches are played, final overtime doubles match a Decider is played as a regular set with ad scoring and a tiebreak. Friday lineup is announced on Thursday afternoon. Saturday lineup is announced an hour after play ends on Friday night. Sunday lineup is announced an hour after play ends on Saturday night. Match-ups are determined through the exchange of lineup cards by the captains.