Oscar Martinez Dieguez defeated Mark Joachim 6-3 6-1 in the Spain 4 Masters 2 round of 16 on clay. The result followed the form book — Oscar Martinez Dieguez came in leading the head-to-head 1–0. Oscar Martinez Dieguez extended the head-to-head to 2–0.
Martinez Dieguez O. took it in straight sets.
Oscar Martinez Dieguez beat Mark Joachim 6-3 6-1. Umpiry, "Oscar Martinez Dieguez vs Mark Joachim — Spain 4 Masters 2 Round of 16", https://umpiry.com/match/1999-04-09/dieguez-vs-joachim-spain-4-masters-2-r16?utm_source=cite (as of 9 April 1999).