Long Chen defeated Jiaqi Duan 7-6 6-4 in the China F2 qualifying round of 64 on clay.
Chen L. took it in straight sets.
Long Chen beat Jiaqi Duan 7-6(3) 6-4. Umpiry, "Long Chen vs Jiaqi Duan — China F2 Qualifying Round of 64", https://umpiry.com/match/2015-04-06/chen-vs-duan-china-f2-q64?utm_source=cite (as of 6 April 2015).