Aiden Markram smashed a 49-ball hundred, the fastest in the history of 50-overs World Cup cricket, as South Africa racked up a tournament record total of 428-5 against a listless Sri Lanka on Saturday.
Three of South Africa's top four batters, Quinton de Kock (100) and Rassie van der Dussen (108) being the other two, made rapid hundreds. But both were overshadowed by Markram's 106 off 54 balls.
The 29-year-old eclipsed Ireland batter Kevin O'Brien's 50-ball century against England in a 2011 World Cup match.
Put in to bat, South Africa lost skipper Temba Bavuma in the second over, but de Kock and van der Dussen forged a rollicking 204-run stand to deflate Sri Lanka.
Even after the duo exited, Markram kept punishing Sri Lanka, hitting 14 fours and three sixes in his blistering knock.
New Zealand overcame a blitz from centurion Harry Brook to beat England by four wickets on Sunday in the opening game of their three-match one-day international series, with Daryl Mitchell and Michael Bracewell scoring half-centuries.
Belinda Bencic breezed past Czech sixth seed Linda Noskova 6-2 6-3 to win the Pan Pacific Open title on Sunday, erasing bitter memories of her straight-sets defeat by Agnieszka Radwanska in the title clash of the same tournament 10 years ago.
Liverpool manager Arne Slot said opponents have identified a winning strategy against his Premier League champions and he needs to find a solution fast after a 3-2 defeat at Brentford on Saturday made it four league losses in a row.
Rohit Sharma hit a century and Virat Kohli a bright 74 to drive India to a nine-wicket win in the third one-day international on Saturday, sending fans home happy after what are likely to be their final appearances in Australia in their country's colours.