Marvin Barker defeated Chris Kwon 6-4 7-6 in the Mexico F3 round of 32 on hard.
Barker M. took it in straight sets.
Marvin Barker beat Chris Kwon 6-4 7-6(7). Umpiry, "Marvin Barker vs Chris Kwon — Mexico F3 Round of 32", https://umpiry.com/match/2011-05-16/barker-vs-kwon-mexico-f3-r32?utm_source=cite (as of 16 May 2011).