Toni Nadal continually reminds Rafael Nadal to adapt to keep pace with Roger Federer at the summit of men's tennis.
Nadal retired in the fifth set of his quarter-final match against Marin Cilic in the Australian Open because of a hip injury, ending his hopes of a 17th Grand Slam title.
Kyrgios has beaten the likes of Nadal, Federer and Djokovic in his career which adds credibility to Laver's claims.
Rod Laver believes there is one thing that separates Roger Federer apart from the likes of Rafael Nadal, Novak Djokovic, Andy Murray and the rest of the Tour.
Managing his schedule effectively will be key to sustain his current run of form, according to Roger Federer.
Pat Cash believes Australian Open champion Roger Federer has one more goal in tennis after winning his 20th Grand Slam.
Federer won his 20th title at the Australian Open, beasting Marin Cilic in an engrossing contest, which lasted five sets.
With Andy Murray injured and Roger Federer and Rafael Nadal braced to dominate again; can Kyle Edmund take the tennis world by storm?
Nadal retired in the fifth set of his quarter-final match against Marin Cilic because of a hip injury, ending his hopes of a 17th Grand Slam title.
Rafael Nadal is targetting a return from the hip injury that forced his Australian Open withdrawal at the Mexican Open next month.
Rafael Nadal lamented the number of injuries currently being suffered in tennis after a leg issue forced him to retire in the fifth set of his quarter-final tie with Marin Cilic.
Kyle Edmund reached his first Grand Slam semi-final after an upset win over Grigor Dimitrov in the Australian Open. He could potentially face world number one Rafael Nadal next.
Nadal had not dropped a set till the game and was hoping to continue that form ahead of the second week but was thankful to hold on as the game neared completion.
Rafael Nadal admits that sweltering conditions can become a "little bit dangerous for health" after temperatures hit 40C on day five of the Australian Open in Melbourne.
World number one Rafael Nadal secured his place in the third round of the 2018 Australian Open on Wednesday thanks to a 6-3 6-4 7-6 (7-4) win over Argentina's Leonardo Mayer.
The nominees for the Laureus World Sports Awards are headlined by Roger Federer and Rafael Nadal, while there is a raft of British interest.
The six-time Australian Open champion cut an emotional figure after the game, embracing the crowd for their support.
Rafael Nadal is refusing to contemplate retirement after coming through his opening match at the Australian Open without alarm.
Novak Djokovic's situation is akin to that of Roger Federer in 2017 when the Swiss ace also came back from a lengthy spell on the sidelines.
Roger Federer had an extremely successful 2017 campaign following the same schedule, going on to win seven titles, including the Australian Open and Wimbledon.
Andy Murray's ex-coach Mark Petchey believes Rafael Nadal has an equal chance with Roger Federer of winning the Australian Open.
Nadal is hoping to be at his best for the tournament and wants to keep all expectations aside when he takes on Estrella Burgos in the first round.