What is the resolution source for this market?

https://www.itftennis.com/en/tournament-calendar/

M25 Vale do Lobo：洛倫索·席爾瓦·埃·科斯塔 (Lourenco Silva E Costa) 對陣塞巴斯蒂安·索爾格 (Sebastian Sorger)

Name: M25 Vale do Lobo：洛倫索·席爾瓦·埃·科斯塔 (Lourenco Silva E Costa) 對陣 塞巴斯蒂安·索爾格 (Sebastian Sorger) | Future
Creator: Polymarket

Sports/Tennis

16 hours ago

結束日期Nov 17, 2026

流動性$9.93K

交易量$176.5

OI$202

Lourenco Silva E Costa

Live

Sebastian Sorger