Nathan Ponwith defeated Kaptan Kaster 7-5 6-1 in the USA F11 qualifying round of 64 on hard.
Ponwith N. took it in straight sets.
Nathan Ponwith beat Kaptan Kaster 7-5 6-1. Umpiry, "Nathan Ponwith vs Kaptan Kaster — USA F11 Qualifying Round of 64", https://umpiry.com/match/2015-03-23/kaster-vs-ponwith-usa-f11-q64?utm_source=cite (as of 23 March 2015).