Britain’s Cameron Norrie was left to rue missed opportunities as he was beaten by rising teenage star Learner Tien in the Shanghai Masters third round.
World number 33 Norrie fell 7-6 (7-4), 6-3 to the American on another hot and humid evening.
Norrie came back from a break down in the first set and served for the opener before Tien regrouped to take the eventual tie-break.
Norrie then missed three break points early in the second set before losing his serve in the next game, and later missed another two chances to break back.
Tien, ranked 36th in the world, won four of the final five games to set up a meeting with former world number one Daniil Medvedev.
He has beaten Medvedev twice this year – in a memorable five-setter at the Australian Open and again in the semi-finals of last week’s China Open, where the Russian was forced to retire with cramps.
The 19-year-old went on to reach the fourth round in Melbourne and has beaten two top five players this year in Medvedev and Lorenzo Musetti.
He was beaten in the China Open final by world number two Jannik Sinner, who was forced to retire injured in Shanghai yesterday.
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