Defending champion Jasmine Paolini overcame a rain delay on match point to advance to the last 16 of the Dubai Duty Free Tennis Championships with a 6-2, 7-5 win over Germany's Eva Lys.
Elsewhere, in a clash of former finalists, No. 2 seed Iga Swiatek raced past Victoria Azarenka 6-0, 6-2 to reach the next round.
Fifth seed Jessica Pegula also advanced with a 6-0, 6-4 victory against Liudmila Samsonova, while No. 9 seed Paula Badosa defeated Elise Mertens 6-2, 6-1.
In other matches, sixth seed Elena Rybakina eased past qualifier Moyuka Uchijima 6-3, 6-2, No. 11 seed Diana Shnaider lost to Linda Noskova 6-7, 6-4, 3-6, and Dayana Yastremska defeated Anastasia Potapova 6-2, 6-3.
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.