Elena Rybakina said she has lost faith in the electronic line-calling system after the Australian Open champion was left fuming over a disputed call during her three-set victory over Zheng Qinwen at the Madrid Open on Sunday.
The flashpoint came when China's Zheng was awarded an ace for 40-0 while serving at 4-3 in the second set, despite the mark appearing well out.
“Well with this thing, I won’t trust it at all,” Rybakina told reporters after her 4-6 6-4 6-3 victory sealed a spot in the last 16.
“Because there was no mark even close to what the TV showed."
The two-time Grand Slam winner compared the incident to Alexander Zverev’s clash with officials at the men's tournament in Madrid last year, when the German was penalised for unsportsmanlike conduct after taking a photo of a contested mark.
"It was, I think, similar to what Zverev had last year because it was in front of her nose. You can’t not see it. It was pretty frustrating," Rybakina said.
"It’s kind of a stolen point. I understand it was her serve and she was serving really well, but it’s really frustrating.”
Rybakina next faces Anastasia Potapova for a spot in the quarter-finals.
Brighton and Hove Albion ended Arsenal's perfect start to the season in stunning fashion on Saturday, routing the Premier League champions 3-0 on the south coast.
Jos Buttler hit an unbeaten half-century as dominant England beat a sorry Sri Lanka by eight wickets to complete a 3-0 series whitewash and replace India on top of the T20 world rankings after the final match of the series in Manchester on Saturday.
UEFA said on Saturday that decisions on whether national teams should be kept apart in competition draws were made on a case-by-case basis and guided primarily by security considerations, after Ireland's football association said its request to avoid future pairings with Israel had been rejected.
Aston Villa finally breathed a sigh of relief as they claimed their first Premier League win of the season with a 3-2 victory at Tottenham Hotspur on Saturday, while Spurs' season lurched deeper into trouble after another demoralising defeat.