Using some courtside coaching from Nadal, Federer rallied late and raised his game in the decisive super-tiebreaker to beat Nick Kyrgios 6-7 (5), 7-5, 10-7 in the afternoon session.
Nadal opened the evening session by beating Milos Raonic 6-3, 7-6 (1), and was quickly back on court partnering Stefanos Tsitsipas in the day’s doubles rubber. Kyrgios and Jack Sock won that match 6-4, 3-6, 10-6, scoring two key points for the world team which trails Europe 7-5 ahead of the final four matches Sunday.
John Isner began Saturday’s play with a win for Team World, 6-7 (2), 6-4, 10-1 over Alexander Zverev.
The third edition of the annual Laver Cup is decided Sunday by a doubles match, then three more singles – each worth three points with 13 needed for overall victory.