DUBAI, UNITED ARAB EMIRATES
Alexei Popyrin fired 18 aces and lost serve only once in his second-round match at an ATP 500 tournament in Dubai, but it wasn’t enough to overcome world No.22 Karen Khachanov.
The eighth-seeded Russian recorded a 6-4 3-6 7-6(4) victory in a two-hour, 16-minute battle to end Popyrin’s six-match winning streak.
Matt Ebden lasted only 26 minutes in his match against fourth seed Roberto Bautista Agut before retiring with a right thigh injury. The world No.11 Spaniard was ahead 4-1 at the time.
The results leave Australia with no representatives left in the Dubai men’s singles draw.
Popyrin now turns his attention to next week’s ATP 1000 event in Miami, while Ebden has entered an ATP Challenger in Lugano.
Aussies in action – Dubai
Men’s singles, second round
 Roberto Bautista Agut (ESP) d Matthew Ebden (AUS) 4-1 ret.
 Karen Khachanov (RUS) d [WC] Alexei Popyrin (AUS) 6-4 3-6 7-6(4)
Men’s doubles, first round
Kevin Krawietz (GER)/Jan-Lennard Struff (GER) d Jordan Thompson (AUS)/Henri Kontinen (FIN) 6-7(7) 7-6(4) [10-6]