Cameron Silverman defeated Kaptan Kaster 6-3 6-3 in the USA F6 qualifying round of 64 on clay.
Silverman C. took it in straight sets.
Cameron Silverman beat Kaptan Kaster 6-3 6-3. Umpiry, "Cameron Silverman vs Kaptan Kaster — USA F6 Qualifying Round of 64", https://umpiry.com/match/2015-01-26/kaster-vs-silverman-usa-f6-q64?utm_source=cite (as of 26 January 2015).