Greek star Stefanos Tsitsipas opens Day Two of the Laver Cup with an intriguing clash against Aussie Nick Kyrgios.
This will be the second Laver Cup appearance for Tsitsipas and the third for Kyrgios, who has a 4-3 win-loss record.
Second up will see German Alexander Zverev against American veteran John Isner, who helped Team World to a doubles match win late on Friday night.
Russian world No.2 Daniil Medvedev makes his first appearance in Boston, with young Canadian Denis Shapovalov his opponent.
Israeli-born ‘Shapo’ has played Laver Cup before, first up in Prague in 2017, and holds a 1-3 record.
With his idol Roger Federer in the crowd, he has the potential to cause an upset.
Medvedev has never played Laver Cup, but is in red-hot form after winning the US Open.
Stefanos Tsitsipas v Nick Kyrgios
Alexander Zverev v John Isner
Daniil Medvedev v Denis Shapovalov
Doubles: Rublev/Tsitsipas v Isner/Kyrgios