Britain's Cameron Norrie continued his recent good form with a straight-set victory over Chinese Taipei's Wu Tung-lin in Indian Wells, California.
Tenth seed Norrie, 27, broke Wu's serve four times to claim a 6-2 6-4 win.
The 2021 champion will meet Matteo Berrettini in the third round after the Italian beat Japan's Taro Daniel.
It was Norrie's first match since beating world number two Carlos Alcaraz in the final of the Rio Open to claim his fifth ATP title.
Elsewhere, Australia's Jordan Thompson knocked out Greek second seed Stefanos Tsitsipas, winning tie-breaks in the first and third sets to claim a 7-6 (7-0) 4-6 7-6 (7-5) victory.