The Australian tennis star's hopes of advancing to the ATP Finals last four are dangling by a slender margin after a heartbreaking defeat in three sets to Lorenzo Musetti.
The world No 7 succumbed 7-5 3-6 7-5 after failing to serve out the match, allowing the Italian to stay alive in the event and now forcing the Australian needing to convincingly beat Taylor Fritz in his last group match to reach the semi-finals.
But facing Fritz in 48 hours is the smallest of de Minaur's immediate concerns as the Sydney native admits he must address the psychological barriers that threaten to cruel his career.
A unsuccessful competitor of all six of his major tournament quarter-final appearances, the 26-year-old was unable to disguise his distress after suffering yet another crucial opportunity slipping away with his finals destiny in his own hands.
"I don't know how many times I can deal with a loss like this one," de Minaur stated in Turin. "I must talk to my team and try to resolve these problems because these are challenges that can't keep happening."
"I mean, if I truly desire to be serious about advancing to the next level in my career, these matches, I can't lose them. I just must not. It feels like I've lost a lot of them this year. Most importantly, it's getting to a point where mentally it's killing me."
Characterizing his feelings as "quite dark", de Minaur bemoaned a series of third-set slip-ups in 2025 and said he must find a way to win the close matches.
The top-ranked Australian's run of devastating defeats comprise:
"I continue investing everything into these matches," de Minaur commented. "When the outcome isn't positive, it's difficult to keep persevering."
"This is an issue that if it doesn't get sorted, it's going to eat me alive. I need to get it sorted quickly rather than delayed."
De Minaur and Fritz are tied at five wins each in past meetings, though the sixth-ranked American emerged victorious in their matchup in this prestigious tournament last year.
The Aussie's hopes remain flickering after Fritz experienced a 6-7 (2-7) 7-5 6-3 defeat to Carlos Alcaraz that ensured the Spaniard would advance to the semi-finals as the winner of the Jimmy Connors group.
The world No 2's win, having already defeated de Minaur, put Alcaraz a single victory away of claiming the year-end top ranking from Jannik Sinner.
Even if he loses to Musetti in his final group match, Alcaraz will regain the world No 1 ranking unless Sinner, who beat Auger-Aliassime in his opener on Monday, goes undefeated to defend his ATP Finals title.
"I will try not to focus on it," said Alcaraz. "It's going to be a extremely important match for me. I will try not to let the anxiety play a negative role in the match. I will think about my objectives, about feeling much better than today."
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