Roman Borvanov defeated Carsten Ball 6-2 6-4 in the Mexico F4 qualifying round on hard.
Borvanov R. took it in straight sets.
Roman Borvanov beat Carsten Ball 6-2 6-4. Umpiry, "Roman Borvanov vs Carsten Ball — Mexico F4 Qualifying Round", https://umpiry.com/match/2008-04-21/ball-vs-borvanov-mexico-f4-qf?utm_source=cite (as of 21 April 2008).