Naomi Osaka stunned the returning Serena Williams in the first round at the Miami Open on Wednesday, adding the 23-time grand slam winner to her growing list of scalps.
Williams was playing only her second tournament since giving birth to her first child having lost to sister Venus at Indian Wells last week.
Osaka won that tournament to collect her first singles title and the Japanese showed further superb form, a 6-3 6-2 victory over Williams following a straight-sets triumph against another big name in world number one Simona Halep in the last four of the Indian Wells Masters.
Showing some initial nerves, Osaka had to battle to hold her first service game, although Williams was displaying understandably rusty movement as her comeback continues.
But the 20-year-old drew first blood, piling pressure on the Williams serve and forcing the American to chip a backhand wide to concede the first break of the match.
And Osaka maintained her momentum by grabbing the first set with another break, Williams unable to cope with the Japanese's powerful and accurate groundstrokes.
Williams had to save break point in her first service game of the second set, a thumping serve down the middle helping her to hold.
The flawless Osaka would not be denied, though, moving 3-1 up by breaking Williams again, and the biggest win of her career was soon wrapped up.
Williams, an eight-time Miami Open champion, saved the first match point but sent a routine forehand long to give rising star Osaka further glory.
Despite knocking out Williams the draw does not get much easier for Osaka, who will face fourth seed Elina Svitolina in round two.
|Farah concussed on 250th Wests game as Tigers stun Souths|
|Waratahs overrun Highlanders in stunning second-half fightback|
|Rose scores record-equalling 64 to jump into Open contention|
|Moreno hails Liverpool´s recruitment drive as ´top, top players´ arrive|
|AC Milan elect new board with CEO Fassone out|
|Sri Lanka grind sorry South Africa into the Colombo dirt|
|Mina ready to reject offers for Barcelona stay|
|Guardiola tells Sane to use World Cup snub as motivation|
|Golovin´s ex-team-mate Chepchugov drops hint over Chelsea move|
|Reed & Rose make early charges on Carnoustie ´moving day´|
|Sancho ´had a point to prove´ in Dortmund´s win over Manchester City|
|Li hits back at AC Milan owners Elliott as bitter split continues|
|Crusaders cruise past Sharks to book Hurricanes semi-final|
|Rabiot would be a great signing for Barcelona – Xavi|
|JaVale McGee: Lakers are going to be ´one of the most fun teams ever´|
|Dolphins owner Ross: National anthem policy a ´placeholder´|
|Boga leaves Chelsea for Sassuolo|
|Schurrle in talks to leave Borussia Dortmund|
|Guardiola happy with Mahrez and Man City despite loss|
|Dodgers top Brewers in Machado´s debut|
|Raptors GM apologises to DeRozan after Spurs trade|
|Manchester City 0 Borussia Dortmund 1: Gotze spoils Mahrez´s debut in ICC opener|
|United fans keeping De Gea at Old Trafford – Herrera|
|Keita: I turned down Barca and Bayern for Liverpool|
|Merritt stays ahead as rain halts Barbasol Championship|
|Roma had to sell Alisson to Liverpool, says Totti|
|Donald Trump: Kneeling players should be suspended without pay|
|Cardinals´ Carpenter makes history|
|Nationals pair Strasburg, Zimmerman activated from DL|
|Premier League-linked Plattenhardt feels at home at Hertha|
|Johnson expecting tough Granollers challenge|
|Good Luck at last! Colts quarterback fit for training camp|
|Haase humbles Rublev as Cecchinato charges on|
|Benzema hits back at ´crazy´ De Laurentiis over age jibe|
|Leeds Rhinos finally end winless streak in Super League|
|No freaky Friday for Spieth as he bounces back in round two|
|Double boost for Bouchard in Gstaad|
|Iconic Ronaldo to raise Serie A level - Roma´s Hamm|
|Brighton birthday boy March renews contract|
|Lamela hoping injuries are behind him after signing Tottenham extension|
|Where will I get my massage? - Roma´s Pallotta mocks UEFA ban|
|Rashid struck by Lightning amid speculation over Test recall|
|Major misses a mixed blessing for Fowler and Kuchar|
|Fleetwood, McIlroy and Spieth bare teeth as Kisner and Johnson lead|
|The Open 2018 diary: Fleetwood´s swinging in the rain, but it´s a slog for McIlroy|
|Fees agreed as Fabri closes in on Fulham move|
|Neymar and Mbappe have a very good relationship, claims PSG president|
|Boufal joins Celta Vigo on loan from Southampton|
|Leicester sign Ward from Liverpool amid Schmeichel speculation|
|Kisner philosophical after run-in with the Barry Burn|
|Gattuso unsure of Bonucci future|
|Verdasco, Gasquet advance but Ruud´s run is over in Bastad|
|James to remain at Bayern Munich, says Rummenigge|
|Texans QB Watson expects to be fit for training camp|
|Torpedo Moscow deny cancelling player´s contract over racist abuse|
|Napoli decry Cavani, Di Maria rumours as fake news|
|Kisner feels the Burn, Spieth on the surge|
|Woods: I could have cleaned up my round|
|Lille swoop for free agent Fonte|
|Sagan completes hat-trick after bunch sprint|
|´Amateur´ DFB needs Lahm´s help - Rummenigge|
|Horner expects Ricciardo new deal ´pretty quickly´|
|Diakhaby swaps Monaco for Huddersfield|
|Tottenham´s Lamela signs to 2022|
|Atletico´s Rodrigo excited to wear Simeone´s 14|
|F1 Raceweek: Red Bulls steal show from Mercedes but Ricciardo to start from back|
|Fakhar hits historic double hundred as Pakistan thrash Zimbabwe|
|Roma president Pallotta hit with three-month UEFA suspension|
|Hamburg extend contract of coveted youngster Jann-Fiete Arp|
|Steady start for Kisner as Woods endures mixed day at Carnoustie|