American Frances Tiafoe reached the first ATP Masters 1000 semi-final of his career on Wednesday, downing former champion Cameron Norrie 6-4, 6-4 to make the last four at Indian Wells. 

Tiafoe, ranked 16th in the world, hasn't dropped a set in the combined WTA and Masters 1000 event in the California desert. 

He had broken Norrie twice in the second set to serve for the match at 5-2 but was broken.

He made no mistake, however, at his next opportunity. His biggest serve of the match put him up 40-0 as he closed it out in style. 

Britain's Norrie, who won the title in 2021, saw the end of an eight-match win streak that included his victory over Carlos Alcaraz in the Rio de Janeiro final last month. 

Tiafoe will face sixth-ranked Daniil Medvedev for a place in the final, who defeated a determined Alejandro Davidovich Fokina 6-3, 7-5, pushing his ATP match winning streak to 18 straight.

The Russian, coming off three straight ATP titles at Rotterdam, Doha and Dubai, beat Alexander Zverev in the fourth round on Tuesday despite badly rolling his right ankle in the second set.

On the women's side, Australian Open champion Aryna Sabalenka overpowered U.S. teenager Coco Gauff 6-4, 6-0 to reach the semi-finals of the WTA and ATP Masters 1000 at Indian Wells. 

Sabalenka, in search of a third title this year after a victory at Adelaide and her first Grand Slam crown in Melbourne, needed just 64 minutes to subdue the young American star and set up a clash with last year's Indian Wells runner-up, Maria Sakkari of Greece, who came back from a set down to cruise past two-time Wimbledon champion Petra Kvitova 4-6, 7-5, 6-1.

The Belarusian had five aces and a total of 18 winners. She didn't face a break point and closed out the match with three straight unreturnable serves.

Gauff fired half a dozen aces, 12 winners in all, but under the intense pressure applied by Sabalenka had 14 more unforced errors than her opponent.

(With input from agencies)