What is the resolution source for this market?

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

M25 Santa Margherita di Pula：朱利奥·斯特拉 (Giulio Stella) VS 福斯托·塔巴科 (Fausto Tabacco)

Name: M25 Santa Margherita di Pula：朱利奥·斯特拉 (Giulio Stella) VS 福斯托·塔巴科 (Fausto Tabacco) | Future
Creator: Polymarket

Sports/Tennis

8 hours ago

结束日期Oct 27, 2026

流动性$1.64K

交易量$18.6

OI$20

Giulio Stella

2.95%

97.05%

Fausto Tabacco