Utterly demoralised and dejected, Alex de Minaur concedes he must address the mental demons that threaten to cruel his career.
De Minaur remains alive at the season-ending ATP Finals - but only just after enduring yet another despairing three-set defeat, this time to Lorenzo Musetti.
Australia's world No.7 went down 7-5 3-6 7-5 after failing to serve out the match, keeping the Italian in the event and now leaving the Sydneysider needing to convincingly beat Taylor Fritz in his third and final group match to reach the semi-finals.