Qualifier Arthur Fery delivered a stunning Australian Open win by beating 20th seed Flavio Cobolli on Sunday.
Sabalenka relied on her trademark powerful serve to hold firm in the key moments, winning two tiebreaks to take her tally to 18 for the season, the most by any women's singles player in the professional era.
MERTENS OVERPOWERS RUSE TO WIN FIRST GRASS TITLE
Twice defending champion Jessica Pegula crashed out of the Canadian Open after losing to Anastasija Sevastova 3-6, 6-4, 6-1 in the third round on Friday, while six-times major winner Iga Swiatek marched on with a dominant 6-2, 6-2 win over Eva Lys.
India's Yuki Bhambri and his American partner Robert Galloway secured a hard-fought victory but Rithvik Bollipalli's search for his maiden win in a Grand Slam main draw continued in the French Open men's doubles opening round, in Paris, on Wednesday.
In the evening session, men's third seed Alexander Zverev and women's fourth seed Jessica Pegula were forced off the court mid-match due to rain and the threat of lightning.
Germany beat Canada 2-0 on Wednesday to reach the Davis Cup semi-finals where they will face the Netherlands who advanced with a stunning upset of hosts Spain.
American lucky loser Reilly Opelka put up an intense battle to stun top seed Daniil Medvedev 7-6(5), 7-6(5) and reach the semi-finals in Den Bosch on Friday.
Belgian third seed Elise Mertens dug deep to save 11 match points and battle past two-time winner Ekaterina Alexandrova to reach the Libema Open final.
Carlos Alcaraz was pushed all the way by fellow-Spaniard Jaume Munar in a thrilling contest
Coco Gauff dismantled defending champion Iga Swiatek 6-1, 6-1 on Thursday with a ruthless display to storm into her first Madrid Open final, where she will face world number one Aryna Sabalenka for the WTA 1000 title.
Safiullin upsets Muller, Moutet through in Mallorca
Sumit Nagal registered a straight sets victory against Canada's Gabriel Diallo on his debut at the Miami Open.
World number one Jannik Sinner's bid for a second Grand Slam title continued to gain momentum as he thumped Christopher O'Connell 6-1, 6-4, 6-2 on Saturday to reach the US Open fourth round.
Canada powered into the quarter-finals of the Davis Cup for the third straight year with a victory over Britain on Sunday.
Nagal is likely to reach a new career-high ranking of world No. 92
Britain battled to victory over last year's Davis Cup runners-up Australia in their Finals group stage opener on Wednesday, while Spain and Italy both suffered chastening defeats at home in the premier men's team competition.
Nagal's court coverage and solid defence in long drawn points was the highlight of his win.
A day after taking down world number one Carlos Alcaraz of Spain, Felix Auger-Aliassime booked Canada's place in the Davis Cup quarter-finals on Saturday with a 6-3, 6-4 win against Serbia's Miomir Kecmanovic in the group stage tie in Valencia.