World number one Novak Djokovic polished off fellow Serb Dusan Lajovic 6-2, 6-1 in the first round of the Qatar Open on Tuesday.
Tournament officials said there was no heat rule in effect on Friday for the first time in three days, with cloud cover expected to bring cooler temperatures.
Rafael Nadal's season got off to a miserable start as his comeback from injury and illness stalled in the Qatar Open first round with a 1-6, 6-3, 6-4 defeat by German journeyman Michael Berrer.
World number one Novak Djokovic's French Open preparations were dealt with a blow as he suffered a 6-3, 4-6, 6-2 defeat by Russian Daniil Medvedev in the Monte Carlo Masters quarter-finals on Friday.
Rafael Nadal suffered a shock 7-5, 6-3 defeat by Austrian Dominic Thiem in the Madrid Open quarter-finals on Friday, a result that means the Spaniard will lose the world number one ranking.
Having annoyed Nadal with an underarm serve at Acapulco, Nick Kyrgios doubled down with the tactic to win two points against hapless Serb Dusan Lajovic at the Miami Open and fire up a timeworn debate between modern fans and purists.
hampion Rafael Nadal and top-ranked Novak Djokovic turned in impressive displays to reach the Monte Carlo Masters quarter-finals on Thursday. Nadal, chasing a record-extending 12th Monte Carlo title, broke Grigor Dimitrov's serve on four occasions to defeat the Bulgarian 6-4 6-1.
Images from Day 3 of the 2022 Australian Open in Melbourne on Wednesday.
Roger Federer faced down local battler John Millman 4-6, 7-6(2), 6-4, 4-6, 7-6(8) in a five-set thriller on Friday night to reach the last 16 of the Australian Open. Defending champion Novak Djokovic thumped Japanese Yoshihito Nishioka 6-3, 6-2, 6-2 in the third round of the Australian Open on Friday to stay on course for a record-extending eighth title at Melbourne Park. Images from Day 5 of the 2020 Australian Open.