NICK Kyrgios has fallen foul of the Australian Open's strict new timing rules, drawing a $US2000 fine for not being ready to start his match against Jo-Wilfried Tsonga.
Kyrgios was issued with a code violation by US umpire Jake Garner for not being ready to start play within the one-minute time limit after the warm-up on Rod Laver Arena.
The Canberran had returned to his chair to change his shirt and wasn't ready to resume within the 60-second limit, earning Garner's wrath.
The fine is Kyrgios' second for the tournament.
He was also hit with a $US3000 for unsportsmanlike conduct in the fall-out to his comfortable opening-round victory.
Kygios was heard telling a rowdy spectator to "shut the f... up" during a a 6-1 6-2 6-4 rout of Brazilian Rogerio Dutra Silva.
Tsonga was given a warning for unsportsmanlike conduct during a gripping third-round clash with Kyrgios but is yet to be fined.
The tournament issued three other fines, adding to an already bulging list.
Alexander Zverev ($3000, racquet abuse), Viktor Troicki ($US2000, unsportsmanlike conduct) and Diego Schwartzman ($2000, audible obscenity) are the latest to be disciplined.
They join Wimbledon champion Garbine Muguruza, whose miserable Australian summer circuit has ended with a $US5000 fine for unsportsmanlike conduct in second-round defeat Hsieh Su-Wei.
American CoCo Vandeweghe remains at the top of the Open's fines list, drawing a $US10,000 penalty for an expletive-ridden outburst.
The New Yorker was breached the code of conduct with unsportsmanlike conduct, accused mouthing obscenities in the direction opponent Timea Babos.
Croat Borna Coric tops the men's fines bulletin with a $US5000 penalty for racquet abuse during his defeat to Queenslander John Millman.
Argentina's Diego Schwartzman and Romanian Marius Copil were fined $US2000 for the same offence.
Kazakh Alexander Bublik was hit with two $US1000 fines for audible obscenities during qualifying.
American Stefan Kozlov was penalised $US1000 for an audible obscenity in first-round qualifying.
Ukraine teenager Marta Kostyuk was hit with a $US2500 fine for receiving coaching during her second-round win over Victorian Olivia Rogowska.
Six-time Australian Open winner Novak Djokovic is out of this year's tournament - and he is uncertain when he'll fully be over the elbow injury that plagued his 2017 season.
South Korean Hyeon Chung stunned the former world no.1 in straight sets on Monday night as Djokovic, who only returned to competitive tennis in Melbourne this year after retiring at Wimbledon with the elbow injury, required medical treatment at different stages.
At times he looked like the Djokovic of old but laboured at others.
Speaking after the match, the Serbian star was asked about his health.
"It's not great. Unfortunately, it's not great. Kind of end of the first set it started hurting more. So, yeah, I had to deal with it till the end of the match."
And Djokovic was unsure if he would need a further break in a bid to regain full fitness.
"I don't know. I have to reassess everything with my team, medical team, coaches and everybody, scan it, see what the situation is like. Last couple weeks I played a lot of tennis."
Meanwhile Thanasi Kokkinakis' injury curse has struck again, ruling the talented South Australian out of next week's Davis Cup tie with Germany in Brisbane.
Kokkinakis tore a pectoral muscle during first-round Australian Open defeat to Russian Daniil Medvedev.
"I haven't picked up a racquet since so it's pretty conclusive I'm out," Kokkinakis said.
"I'm not sure what the timeline is on when I can play again, but I don't want to risk rushing it.
Kokkinakis, 21, has been haunted by injury throughout his young career and his unavailability robs Australian captain Lleyton Hewitt of a possible Cup option.
On day nine, Ukrainian Elina Svitolina and Belgian Elise Mertens get things started this afternoon, before Grigor Dimitrov - the man who eliminated Nick Kyrgios - meets the emerging Kyle Edmund,
Tonight, Nadal takes on big-serving Croat Marin Cilic.
Later, Dane Caroline Wozniacki tries to continue her run towards a maiden slam win when she faces Spain's Carla Suarez Navarro.