Rin Kojima defeated Derin Sen 6-4 7-6 in the M25 Sintra 2 qualifying round of 64 on hard.
Kojima R. took it in straight sets.
Rin Kojima beat Derin Sen 6-4 7-6(10). Umpiry, "Rin Kojima vs Derin Sen — M25 Sintra 2 Qualifying Round of 64", https://umpiry.com/match/2025-10-27/kojima-vs-sen-m25-sintra-2-q64?utm_source=cite (as of 27 October 2025).