Atp Challenger Tour 2025. The first quarter of the 2025 atp challenger tour season was highlighted by nuno borges’ title defence at the 175 event in phoenix and breakthrough title runs by. Damir dzumhur has won three atp challenger tour titles this year.

The atp challenger tour is a series of atp tennis tournaments that constitute the second level of professional tennis. Indian tennis player sumit nagal won the chennai open 2025 singles final for his fifth atp challenger tour title.