Emma Raducanu and fellow Briton Jack Draper each gained on Saturday to achieve the third spherical at Indian Wells.
Raducanu, the 2021 US Open champion, fought again from 4-1 down within the first set to beat Poland’s Magda Linette, the twentieth seed, 7-6 (7-3) 6-2.
She’s going to now face both Beatriz Haddad Maia of Brazil, who’s the thirteenth seed, or the Czech Republic’s Katerina Siniakova.
Draper, the world quantity 56, beat compatriot Dan Evans 6-4 6-2.
Raducanu, 20, continued her return to kind after shrugging off sickness and a recurring wrist damage to beat Danka Kovinic on Thursday.
The world quantity 77 fought again to win the opening set on a tie-break, then eased by the second set.
Draper, 21, broke Evans, 32, in his first two service video games and his final two to knock out the twenty fourth seed.
He might now face one other all-British affair as he’ll meet both Andy Murray or Moldova’s Radu Albot within the third spherical.