Denis Istomin lifted the Chengdu Open trophy after Marcos Baghdatis was forced to retire through injury in Sunday's final.
Trailing 3-2 in the opening set, Baghdatis slumped to the floor in clear distress after serving at 15-30.
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The 32-year-old was quickly comforted by his opponent, who placed a towel under Baghdatis' head as the Cypriot was attended to by a physio.
It was soon clear that Baghdatis, who had been seeking his first title since 2010, was unable to continue, meaning Istomin was crowned the champion in an anti-climactic end to the tournament.
The Chengdu Open's official Twitter account later attributed Baghdatis' retirement to a back injury.
Istomin is now a two-time winner on the ATP World Tour, this latest triumph following his breakthrough tournament victory in Nottingham two years ago.
