Carlos Alcaraz is on the verge of exiting the 2024 ATP Finals following a straight-set defeat by Alexander Zverev in Turin.
Second seed Zverev secured top spot in the group with a 7-6 (7-5) 6-4 win and will face American Taylor Fritz in the semi-finals.
Alcaraz, who only won one of his three group matches, must await the result of tonight's match between Andrey Rublev and Casper Ruud. He will be out if Norway's Ruud takes a single set against the winless Russian.
Zverev, 27, who also won his opening two matches against Rublev and Ruud in straight sets, has not had his serve broken so far at the season-ending tournament – but he played it down when asked whether he is currently playing the best tennis of his life.