Nick Kyrgios and Thanasi Kokkinakis's bid to repeat their Australian Open doubles triumph of 2022 ended in retirement in on Thursday when the latter was unable to continue their first-round tie.

Thanasi Kokkinakis was warned for "bending the rules" as he called the physio during his marathon battle with Jack Draper in Melbourne.

A seething Thanasi Kokkinakis has described his ongoing pectoral muscle issues as “physical and mental torture” after losing a five-set epic at the Australian Open.

Kokkinakis has been struggling with a pectoral injury for some time, and was forced to withdraw from the Adelaide International last week. He managed to win his first-round singles match at the Australian Open, before suffering a heartbreaking five-set loss in the second round.

An anguished Thanasi Kokkinakis has cast serious doubt on his playing future as a chronic pectoral injury threatens to sideline him for a significant period.The 28-year-old suffered a heartbreaking 6-7 (3-7),

Australia’s Alex de Minaur has also come out in defence of fellow country Thanasi Kokkinakis, who has received criticism about prioritising exhibition events before preparing for the mega-events.

Thanasi Kokkinakis says he suffered pectoral muscle injury "torture" in marathon Australian Open second-round defeat to England's Jack Draper.

Australian tennis star Thanasi Kokkinakis has stunned his opponent with an amazing act of sportsmanship at a critical moment of their second-round Australian Open clash. British No.15 seed Jack Draper was serving at two sets to one down, and trailing by a break in the fourth when he was about to be denied a certain point after a long rally.

Jack Draper said the abuse he received during his thrilling five-set Australian Open comeback over home favourite Thanasi Kokkinakis inspired him to raise his level as the British No 1 reached the third round of the grand slam for the first time.

Jack Draper fed off ‘abuse from the crowd’ in victory over Thanasi Kokkinakis - Draper came through a second five-setter while debutant Jacob Fearnley is also through to round three.

Jack Draper dug deep in order to take down home hope Thanasi Kokkinakis earlier on Wednesday afternoon sealing a 6-7(3-7), 6-3, 3-6, 7-5, 6-3 win over the Aussie ace at the Australian Open.