Defending champion Carlos Alcaraz and Italian rival Jannik Sinner remained on course for a semi-final showdown after cruising into the last eight of the ATP-WTA Indian Wells Masters.
Alcaraz sailed into the last eight as he took revenge on Hungary’s Fabian Marozsan with a 6-3, 6-3 victory.
In-form Sinner meanwhile booked his last eight berth with a 7-6 (7/4), 6-1 defeat of Ben Shelton.
Sinner’s win was his 18th straight victory dating to late last season, leaving him three wins away from his third title of the season after winning the Australian Open and Rotterdam.
“I played really well in the tight moments,” the 22-year-old world number three said as he lines up against Czech Jiri Lehecka in the quarters.
“I knew I would not get much rhythm from him. I can be proud of how I played. The wind didn’t make it easier but I tried to stay positive and it worked out.”
Sinner could face Spain’s reigning Wimbledon champion Alcaraz in the semi-finals in California in what would be the latest instalment of a burgeoning rivalry.
The duo fought an epic US Open quarter-final in 2022 and met in the semi-finals at Indian Wells and Miami Masters events last season.
Alcaraz must navigate a quarter-final against sixth seed Alexander Zverev before any meeting with Sinner. Zverev reached the last eight after defeating Alex de Minaur 5-7, 6-2, 6-3 in two and three-quarter hours.
Elsewhere Tuesday, Greek Stefanos Tsitsipas failed to reach a second career quarter-final here, with the 11th seed losing 6-2, 6-4 to rising Czech youngster Lehecka.
The upset was the youngster’s second in succession after dispatching fifth seed Andrey Rublev in the previous round.
Tsitsipas, whose form has been modest so far this season, achieved the last eight during his 2018 debut at the Tennis Garden but has yet to duplicate that effort.
In the women’s fourth round, top seed seed Iga Swiatek swatted aside Yulia Putintseva 6-1 6-2 on Tuesday to set up an Indian Wells quarter-final clash with former world number one Caroline Wozniacki.
Swiatek got off to a slow start and saved four break points in the third game before finding her groove. The Pole then raced to a 5-1 lead, prompting Putintseva to throw her racket to the floor in frustration, before wrapping the opener up in less than 30 minutes.
Swiatek, the 2022 champion, made early inroads in the second set and while Putintseva started going for her shots more the 22-year-old world number one proved too strong for her Kazakh opponent.
“I knew I had to keep my focus (in the second set), she was trying different stuff out there,” said Swiatek, who dropped serve twice in the second frame.
“But I just really wanted to play my game and focus on what I want to do. I’m glad I did that.”
Wozniacki, who returned to the tour last year after stepping away from the sport in 2020 to start a family, eased past fellow mother Angelique Kerber 6-4 6-2 earlier in the day.
“She’s a really experienced player,” Swiatek said of the 2011 champion. “I think she’s playing great after her maternity break, she was fighting to come back.
“I have huge respect. It’s going to be a nice match.”
Wozniacki said she was relishing the opportunity to continue her run at Indian Wells, after making the quarters for the first time in four years.
“I’m just enjoying myself and I’m just thrilled I get another match in front of all of you guys,” she said.
Ukrainian Marta Kostyuk defeated Anastasia Pavlyuchenkova 6-4 6-1 and next meets another Russian in Anastasia Potapova, who beat Jasmine Paolini 7-5 0-6 6-3.
Kostyuk dropped only four points on serve in the match and broke Pavlyuchenkova five times to reach her first quarter-final at a WTA 1000 event.

Results
Men - 4th round
Jiri Lehecka (CZE x32) bt Stefanos Tsitsipas (GRE x11) 6-2, 6-4
Jannik Sinner (ITA x3) bt Ben Shelton (USA x16) 7-6 (7/4), 6-1
Alexander Zverev (GER x6) bt Alex De Minaur (AUS x10) 5-7, 6-2, 6-3
Carlos Alcaraz (ESP x2) bt Fabian Marozsan (HUN) 6-3, 6-3
Women - 4th round
Iga Swiatek (POL x1) bt Yulia Putintseva (KAZ) 6-1, 6-2
Caroline Wozniacki (DEN) bt Angelique Kerber (GER) 6-4, 6-2
Anastasia Potapova (RUS x28) bt Jasmine Paolini (ITA x13) 7-5, 0-6, 6-3
Marta Kostyuk (UKR x31) bt A Pavlyuchenkova (RUS x22) 6-4, 6-1