09:58 CET - We'll be back with a brand new tracker later this evening at around 21:00 CET to keep you up to date with both women's semi-finals in California. In the meantime, catch up on all the men's action here and the women's here.
04:55 CET - Carlos Alcaraz beats Francisco Cerundolo in straight sets 6-3, 7-6 to advance to his second straight Indian Wells semi-finals. The world's number two has now won 11 of his last 12 matches. He'll be taking on Jack Draper on Saturday.
03:10 CET - Jack Draper completes the comeback after being down 0-3 in the second set to beat Ben Shelton 6-4, 7-5. He now advances to his first-ever Masters 1000 semi-final as he continues to play the best tennis of his career.
02:40 CET - Aryna Sabalenka has yet to drop a single set all week as she takes down Liudmila Samsonova 6-2, 6-3. This will now be the second time in Sabalenka's career making the Indian Wells semi-finals.
After the match, she credited Carlos Alcaraz, saying, "Watching Alcaraz play helped me a lot. I was like ‘Come on, Alcaraz would get it and he would hit a winner.’”
The semi-finals will be a rematch of the Australian Open final between her and Madison Keys, which Sabalenka lost in three sets.
00:45 CET - Madison Keys defeats Belinda Bencic after keeping her to a pair of breadsticks 6-1, 6-1. She'll be moving on to the Indian Wells semi-finals for the first time in her career and is now on a 16-match win streak - 18-1 this year.
23:40 CET - After a thrilling deciding set tie-break, Daniil Medvedev edged out Arthur Fils to win 6-4, 6-2, 7-6 (9-7) to book his spot in the semi-finals.
23:20 CET - Superstar Mirra Andreeva's dream Indian Wells has continued this evening as she knocked out another top player in Elina Svitolina.
Andreeva is still yet to drop a set despite having some troubles in the first set against Svitolina, the teenage sensation won 7-5, 6-3 to secure her semi-final spot.
21:20 CET - Over to the ATP side, Holger Rune responded strongly to dropping the first set by dropping just three games in the next two sets and beating Tallon Griekspoor 5-7, 6-0, 6-3.
With that win Rune becomes the first man to book his place in the Indian Wells semi-finals.
20:50 CET - World number two Iga Swiatek is making all of her opponents seem average at Indian Wells even when up against a tough opponent like world number nine Qinwen Zheng. Swiatek made light work of Zheng this evening by winning 6-3, 6-3 and booking her place in the semi-final.
Zheng did put up a bit of a fight in the second set by breaking as Swiatek was serving for the match but it would prove in vain as Swiatek broke straight back to secure the win.
19:18 CET - Play has now started in California, with Iga Swiatek in early action against Zheng Qinwen and Holger Rune facing the challenge of in-form Tallon Griekspoor.
17:00 CET - Good evening and welcome to our coverage of today's tennis on what promises to be a thrilling day of quarter-final action at Indian Wells!
First up, women's second seed Iga Swiatek takes on Olympic champion Zheng Qinwen at 19:00 CET, while Holger Rune faces Tallon Griekspoor at the same time on the men's side of the tournament.
Later on, Carlos Alcaraz, Aryna Sabalenka, Daniil Medvedev and teenage sensation Mirra Andreeva all take to the court in a star-studded schedule you won't want to miss.
Check out the full men's draw here and the women's draw here.