Murray retired from professional tennis following his loss with partner Dan Evans in the quarterfinal of the men's doubles at the Paris Olympics by the American pair of Taylor Fritz and Tommy Paul on Thursday.
Reigning Australian Open champion Novak Djokovic came close to completing a 'triple bagel' victory against Adrian Mannarino in the ongoing edition of the tournament on Sunday.
Rublev overcame a significant scare to defeat the Brazilian 7-5, 6-4, 3-6, 4-6, 7-6(10-6) and advance to the second round in Melbourne for the eighth time in eight outings.
Argentine Diego Schwartzman rallied from one set down to upset World No. 8 Taylor Fritz 6-4, 3-6, 7-6(5) and claimed a spot in the Round of 16 at the Shanghai Masters on Monday
The Swiss thinks that one of the things that makes the Laver Cup so beautiful is the chance it allows spectators to see top ATP Tour singles players team up on the doubles court.
Djokovic on Tuesday night overcame USA's Taylor Fritz to reach the semifinal of the ongoing US Open at New York, making it his 47th appearance in a Grand Slam event semifinal.