CALIFORNIA - Jannik Sinner advanced to the Indian Wells quarterfinals with a resounding 6-1, 6-2 victory over American Learner Tien (his second defeat, the first in last year's Beijing final, in two matches against the South Tyrolean). The match ended in 1:07, a decidedly more comfortable affair than his round of 16 match against Tiafoe: again, two sets, but fiercely contested and decided in a tiebreak. In the semifinals, his third in the California tournament, Sinner will face Zverev (the No. 4 seed).