Petra Kvitova will not become world number one for the first time next week after she was beaten by Ashleigh Barty in the Miami Open quarter-finals.

The Czech lost 7-6 (8-6) 3-6 6-2, hours after a man was jailed for eight years for stabbing her at her home in 2016.

Kvitova, 29, needed to reach the final to have a chance of replacing Naomi Osaka at the top of the rankings.

Barty will play Anett Kontaveit in the semi-finals, after the Estonian beat Taiwan’s Hsieh Su-wei 3-6 6-2 7-5.

Victory was Australian Barty’s first over Kvitova in five attempts.

Australian Open runner-up Kvitova came from 3-0 down in the final set to get back on serve, but double-faulted on match point as the 22-year-old 12th seed wrapped up victory in just under three hours.

Kontaveit overcame a rain delay to see off world number 27 Su-wei, who beat world number one Naomi Osaka in the third round and 13th seed Caroline Wozniacki in the fourth.

Second seed Simona Halep plays Qiang Wang and Czech Karolina Pliskova faces Marketa Vondrousova in the remaining quarter-finals on Wednesday.

Romanian Halep will replace Osaka as world number one if she reaches the final.

• Djokovic & Edmund lose in fourth round

British number one Kyle Edmund reacted angrily to noise from the crowd during his Miami Open fourth-round defeat by American John Isner.

He was trailing 5-3 in the second set tie-break when the point was stopped after he heard a shout from the crowd.

Umpire Carlos Bernardes ruled Edmund had lost the point as a result, with the Briton saying: “They keep shouting every point, I keep hearing it.”

Isner served an ace on the next point to wrap up a 7-6 (7-5) 7-6 (7-3) win.

Eighth seed Isner will face either world number one Novak Djokovic or Spain’s Roberto Bautista Agut next.

Australia’s Nick Kyrgios was given a point penalty for appearing to swear at a member of the crowd during his loss to Borna Coric.

Kyrgios, who was abused by a spectator in his third-round win over Dusan Lajovic, also smashed his racquet in the 4-6 6-3 6-2 defeat.

He was given a warning for breaking the racquet – which he later gave to a crowd member – before being deducted a point for an audible obscenity.

The 23-year-old criticised umpire Gianluca Moscarella at a changeover, saying: “The entire match people were screaming out. You did not do one thing until I told you to do it.

“Honest feedback, you’ve done a terrible job.”

Controversial Australian Nick Kyrgios has been called a “genius” by former British Fed Cup captain Judy Murray, who is “surprised” no other players follow his lead.

It comes after world number 33 Kyrgios, 23, twice served underarm during his 6-3 6-1 defeat of Serb Dusan Lajovic at the Miami Open on Monday.

A spectator was ejected after a mid-match argument with Kyrgios.

“The underarm serve,” Murray wrote on Twitter, accompanied by a heart emoji.

“The whole point of tennis competition is to disrupt your opponent’s game by applying pressure through changing the speed, spin, direction, depth or height of the ball. And that includes the serve.”

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The comments by Murray – mother of three-time Grand Slam champion Andy – prompted debate on social media, with Belgian world number 56 Kirsten Flipkens backing her stance.

It was not the first time Kyrgios has produced an underarm serve, a tactic seen as not in the “spirit” of the sport by many.

Last month, after he used it in his victory over world number two Rafael Nadal at the Mexican Open in Acapulco, the Spaniard accused him of “lacking respect” for his opponent and the crowd.

“I loved it, I loved every single bit of it. I think the crowd loved it,” said Kyrgios after Monday’s win in Miami.

The underarm serve has long been a point of disagreement in tennis. In 1989, 17-year-old Michael Chang used an underarm serve at the French Open against then-world number one Ivan Lendl – a tournament the American teenager went on to win.

Ten years later, also at the French Open, Martina Hingis used it during the final she lost to Steffi Graf.

Kyrgios used it the same day Rajasthan Royals and England cricketer Jos Buttler was controversially run out by Kings XI Punjab bowler Ravichandran Ashwin while backing up at the non-striker’s end in the Indian Premier League.

Rajasthan were 108-1 in the 12th over of their chase when Kings XI captain and India spinner Ashwin stopped in his bowling action and ran out Buttler as he left his ground at the non-striker’s end.

The dismissal – known as a ‘Mankad’ after India bowler Vinoo Mankad ran out Australia batsman Bill Brown in a similar manner in 1947 – is within the laws but there is debate as to whether it is within the spirit of the game.