Sindhu dished out a compact game to outwit Sayaka 21-17, 21-16 in a second round match on Thursday to set up a clash with seventh seeded Chinese He Bingjiao.
Jasmine Paolini became the first Italian woman to win the Italian Open in 40 years when she beat American world number three Coco Gauff in the final.
Diksha Dagar came up with a superb 11-under in the last round to win by a huge margin and clinch the gold medal at the Deaflympics, in Tokyo, on Thursday.
World number one Serena Williams survived a mid-match meltdown to beat Czech Lucie Safarova 6-3, 6-7(2), 6-2 to win the French Open on Saturday, her 20th Grand Slam singles trophy.
Photos of the French Open men's final match between Rafa Nadal and Novak Djokovic being played in Paris
Sania Mirza and Cara Black crashed out of the French Open after being humbled yet again by their nemesis, Su-Wei Hsieh and Shuai Peng, in the women's doubles quarter-finals.
A dominant Rafael Nadal arrived at one career milestone on Thursday but the speed of the Spaniard's rampage through the early rounds of the French Open suggests his eyes are fixed firmly on another more significant one.
Roger Federer survived a second-set hiccup to beat Dimitry Tursunov of Russia 7-5, 6-7(7), 6-2, 6-4 on Friday and reach the French Open fourth round. The Swiss fourth seed will meet Ernests Gulbis of Latvia in the last 16.
Top seed and defending champion Jannik Sinner, playing on his 24th birthday, ended French qualifier Terence Atmane's dream run at the Cincinnati Open with a 7-6(4), 6-2 win on Saturday to reach the final of the US Open tune-up event.
Norwegian Casper Rudd is the first tennis player from his country to reach the final of any Grand Slam.
Czech Lucie Safarova thrashed 2008 champion Ana Ivanovic 6-3, 6-3 to storm into the fourth round of the French Open in Paris, on Saturday.
Stanislas Wawrinka will draw on the advice and experience of the man who coached the only person to beat Rafa Nadal at Roland Garros.
A competitor lambasted the French Open as "one big circus" on Thursday as soggy weather once again came back to exasperate players seeking a foothold in the semi-finals of the rain-hit claycourt major.
Rafael Nadal displayed the athleticism and self-belief that earned him seven French Open titles to tame Novak Djokovic 6-4, 3-6, 6-1, 6-7(3), 9-7 in a pulsating 4-1/2 hour Roland Garros semi-final on Friday.
Maxime Hamou was banished from the French Open on Tuesday after the French player kissed and cuddled a TV journalist following his first-round exit, the French tennis federation (FFT) said.