NEW YORK — Nick Kyrgios eliminated defending U.S. Open champion and No. 1-ranked Daniil Medvedev in the fourth round.

Kyrgios beat Medvedev 7-6 (11), 3-6, 6-3, 6-2 on Sunday night in Arthur Ashe Stadium.

This is the first time Kyrgios has reached the quarterfinals at Flushing Meadows.

It also extends the recent run of high-level play for the 23rd-seeded Kyrgios, a 27-year-old Australian who reached his first Grand Slam final at Wimbledon in July.

Kyrgios was up to some of his usual anctics but he also outplayed Medvedev with the help of 21 aces.

Next for Kyrgios is a matchup on Tuesday against Karen Khachanov.

Tomljanovic, who beat Serena, wins again

The woman who ended Serena Williams’ stay at the U.S. Open has won again to reach the quarterfinals in New York for the first time in nine appearances.

Ajla Tomljanovic beat Liudmila Samsonova 7-6 (8), 6-1 at Louis Armstrong Stadium in a matchup between unseeded players.

Tomljanovic is a 29-year-old Australian who is now into her third Grand Slam quarterfinal after making it that far at Wimbledon the past two years.

This win comes two nights after Tomljanovic defeated Williams in three sets in what is expected to be the last match of the 23-time Grand Slam champion’s career.