Nick Kyrgios’ stop‑start career has lurched into its most serious crisis yet after the Australian tested positive for Benzoylecgonine. A metabolite of cocaine was registered at an ATP tournament in Majorca in June. The International Tennis Integrity Agency (ITIA) confirmed on Wednesday 19 August that the 31‑year‑old has been provisionally suspended since August 4, ruling him out of all competition and barring him from attending tournaments while a tribunal assesses his case. Kyrgios, once a Wimbledon finalist and one of the sport’s most mercurial talents, admitted to a “huge mistake” in an Instagram post, accepting full responsibility for the failed test…