Valentin Vacherot, world number 204 from Monaco, defeated his cousin Arthur Rinderknech 4-6 6-3 6-3 in the Shanghai Masters final.
Vacherot's victory made him the first player from Monaco to win an ATP singles title and the lowest-ranked player to win an ATP Masters 1000 event.
The 26-year-old's win was an emotional one, with a heartfelt embrace shared with his cousin after the match.
Author's summary: Vacherot wins Shanghai Masters title in a fairytale run.