MELBOURNE, Australia — Nick Kyrgios’ return to the Australian Open is over after he and Thanasi Kokkinakis stopped playing while trailing in the second set of their first-round doubles.

Australians James Duckworth and Aleksandar Vukic, who both fared well at last month's Australian Open, have suffered contrasting losses at the Dallas Open.

Aussie journeyman James Duckworth pumps his fist in celebration ... was a close family friend who had also supported him at Melbourne Park last year before cutting a prominent figure in his ...

Kyrgios, too, battled through an abdominal complaint before the pair pulled the pin midway through their first-round encounter with fellow local hopes James Duckworth and Aleksandar Vukic.

His exit saw him become the final Aussie to fall at this year's Melbourne Park tournament ... 2:00 pm* Roberto Carballes Baena (ESP) def. James Duckworth (AUS) 6-4 6-2 7-5 Jan 15 7:00 pm ...