World number two Caroline Wozniacki bowed out of the Indian Wells Masters, beaten by an in-form Daria Kasatkina in the fourth round on Tuesday.
Kasatkina claimed her second win over Wozniacki in 2018 with a 6-4 7-5 victory at the WTA Premier event.
The 20-year-old Russian produced a fine performance, hitting 22 winners and 20 unforced errors to win in one hour and 40 minutes.
The 2011 champion and a two-time runner-up at Indian Wells, Wozniacki gave up leads in both sets.
Wozniacki led 3-0 in the first set before losing five straight games, while the Dane let a 5-3 advantage slip in the second.
The Australian Open champion – who finished with 26 winners and 30 unforced errors – had few answers as Kasatkina produced excellent shots off both her forehand and backhand sides.