Hometown hero Thanasi Kokkinakis’ return to singles competition has been cut short after the 29-year-old made the decision to pull out of Wednesday night’s Adelaide International round of 16 clash with Valentin Vacherot, giving the fifth seed a walkover win. Kokkinakis, who produced an epic performance in his first singles match for 12 months to upset American Seb Korda during the opening round of the tournament, has been unable to recover in time for Wednesday’s clash.