World number one Roger Federer registered a straight-set win over France's Jeremy Chardy to reach the BNP Paribas Open quarter-finals.
Defending champion Federer, who is aiming for a record sixth title at Indian Wells, won 7-5 6-4.
The Swiss is unbeaten in 2018, having won 15 matches and claimed titles at the Australian Open and Rotterdam Open.
He faces South Korea's Chung Hyeon next after his 6-1 6-3 win over Uruguayan Pablo Cuevas.
The two last met in the Australian Open semi-finals, where Federer led 6-1 5-2 before his opponent retired with blisters.
This is the 20-time Grand Slam champion's best start to a season since 2006, when he went on to win 33 of his first 34 matches.