Jack Draper retired from his Japan Open quarter-final towards Ugo Humbert after showing to battle with an stomach harm.
The US Open semi-finalist trailed 7-5 2-1 to the Frenchman and was serving when he pulled up throughout a degree.
Draper shook his head after his serve, specifically, seemed to be hampered by the harm, as he shook palms with Humbert mid-game.
The British No 1 acquired on-court at 5-4 down within the opening set and had his abdomen muscle groups massaged through the medical timeout.
He served to remain within the set however was damaged within the subsequent service recreation as World No 19 Humbert, ranked a spot above Draper, fired a forehand winner to win the set.
Draper managed an extra three video games earlier than he took the choice to retire from the match, which was briefly halted on account of rain following the warm-ups.
Draper was bidding to achieve the semi-finals in Tokyo after securing a powerful win over second seed Hubert Hurkacz within the earlier spherical.
The 22-year-old reached the final 4 of the US Open final month however struggled together with his nerves within the semi-final towards Jannik Sinner in New York.
Humbert will tackle Tomas Machac for a spot within the closing, with Arthur Fils, Ben Shelton, Kei Nishikori and Holger Rune additionally within the draw.
Draper will hope to be match for the ATP Masters match in Shanghai subsequent week, in what is among the largest occasions of the indoor season.
