Caroline Wozniacki slammed chair umpire Renaud Lichtenstein as rude after arguing with him during her Australian Open third-round win over Kiki Bertens.
Wozniacki eased into the fourth round of the opening grand slam of the year with a 6-4 6-3 victory on Friday.
But she was infuriated by Lichtenstein as she served for the match as a line call went against her, allowing Bertens to save a first match point, the Dane then slamming her racquet in frustration as a second went begging.
A third was also spurned but Wozniacki, who also clashed with the umpire over supposed slippery conditions on court, eventually wrapped things up, setting up a meeting with Magdalena Rybarikova on Sunday.
Asked about Lichtenstein, Wozniacki told reporters: "I don't know. I've never had this guy before, I think. Maybe I just don't remember. But I think he did a poor job.
"If the court is wet, I think it's normal to ask for a towel. I don't think someone needs to be rude, and I told him so. I think there were some questionable calls, as well.
"Obviously on the first match point, it was out. He should have seen that, as well. I don't know. I think there's a way he can be strict but not rude, if that makes sense. I just think he was being rude.
"I told him so after the match, that the court was actually really slippery. It really shouldn't be that big of a problem just to clean it."
Wozniacki saved two match points in her second-round match with Jana Fett and, with a more routine win under her belt, the former world number one is putting that struggle behind her.
"It was definitely a little bit easier today than it was the other day," she added. "I'm going to take it and move forward and just call it a day."
|WATCH: Djokovic wins match, loses car|
|Bolt arrives in Sydney for A-League trial|
|Red-hot Bertens beats Svitolina, Halep marches on|
|Snedeker preserves Wyndham lead|
|Halep hits back to torment Tsurenko|
|Raonic fails to break Djokovic stranglehold|
|Emery seeks more ´demanding´ Ozil|
|CAF Champions League Review: Wydad, Al Ahly & TP Mazembe qualify|
|Stephen Curry wants to finish his career with Warriors|
|Hazard among Europe´s best but can improve, says Sarri|
|Tigers boost top-two hopes, Giants close in on fourth|
|Birmingham City 0 Swansea City 0: Monk´s men held despite dominance|
|Inter taking legal action against Tebas over Modric transfer comments|
|Serie A transfer round-up: Zaza joins Torino, Parma sign Gervinho|
|Roma chief Pallotta makes light of De Laurentiis claim|
|Federer starts double-header by seeing off resilient Mayer|
|Ospina joins Napoli on loan from Arsenal|
|Klavan completes Cagliari switch|
|Djokovic holds out against Dimitrov as Raonic awaits|
|New dates confirmed for postponed Serie A fixtures|
|Halep breezes past Barty to set up Tsurenko clash on same day|
|Olesen unable to capitalise on strong start as Jamieson, Waring go clear|
|Hoffenheim tie Kramaric to four-year deal|
|Mina to miss Southampton clash while Gomes is ´weeks´ away|
|Barcelona coach Valverde dismisses Pogba speculation|
|Valverde not prioritising Champions League over defending Barcelona´s LaLiga title|
|Allegri thanks outgoing Juventus icon Marchisio|
|Pants display from Beef? Johnston forced into change of trousers in Sweden|
|Tour champion Thomas has Welsh velodrome named in his honour|
|Gloucester surprised and disappointed by RFU´s swift Cipriani charge|
|Storm skipper Smith´s back injury not ´too serious´|
|Spurs fixture switch doesn´t appeal to Guardiola|
|Brazil call up Andreas Pereira & Arthur but omit Man City stars|
|Mbappe returns to PSG squad, Kehrer set for debut|
|No Messi in Argentina squad as Simeone wins first call-up|
|England man Roy embarrassed by self-inflicted facial injury|
|Atletico Madrid fined for breaching third-party regulations|
|Cipriani charged by RFU after common assault conviction|
|No contact, no negotiation - Leonardo denies AC Milan deal for Milinkovic-Savic|
|Kovacic set for Chelsea debut against Arsenal|
|Fury´s father restrained as Wilder crashes Pianeta weigh-in|
|Kohli and Bumrah fit for win-or-bust Test|
|Stokes ready and desperate to help England, says Root|
|Salah, Mane and Firmino not in competition says Klopp|
|Darmian staying at Manchester United, says Mourinho|
|Guardiola cites fatigue as factor for stricken De Bruyne|
|Kovac approves Rudy departure from bloated Bayern midfield|
|Klopp insists no player leaves without his approval amid Klavan rumours|
|Real Madrid complain to FIFA over Inter´s alleged Modric approach|
|Mourinho ´has never been so happy´ with unsettled Pogba|
|Manly implode amid Barrett uncertainty, Storm´s Smith injured|
|Sarri certain Hazard is staying at Chelsea|
|Liverpool, Champions League, Manchester derby - The matches De Bruyne will miss due to injury|
|Campbell joins Frosinone from Arsenal on permanent deal|
|Schalke sign Lille´s Mendyl to end left-back hunt|
|Stokes back in England team as Curran drops out|
|Ronaldo doesn´t guarantee Juventus the title, warns Allegri|
|Tuchel keen to guide PSG star Mbappe after World Cup heroics|
|Yuri: I can see Neymar joining Real Madrid|
|Milan pounce for Castillejo as Bacca joins Villarreal permanently|
|De Bruyne to miss three months for Manchester City|
|Manchester City talent Arzani completes Celtic loan|
|I know how precious my career is, says regretful Cipriani|
|Paulo Bento named new South Korea coach|
|Milan complete Laxalt deal|
|Poyet suspended by Bordeaux after outburst against board|
|Tuchel will let Neymar and Cavani settle penalties themselves|
|Hooper: We´re ready, bring on the All Blacks!|
|Outstanding Australia deserve our respect - Read|
|Dragons´ Widdop set for Finals return|