Diego Hipperdinger defeated German Puentes 6-3 6-2 in the Spain 4 Masters 3 round of 32 on clay. The upset overturned the form book — German Puentes came in leading the head-to-head 1–0, but Diego Hipperdinger had been the form player, winning 4 of their last 9 on clay. Diego Hipperdinger claimed a first win over German Puentes in two meetings, levelling the head-to-head at 1–1.
Hipperdinger D. took it in straight sets.
Diego Hipperdinger beat German Puentes 6-3 6-2. Umpiry, "Diego Hipperdinger vs German Puentes — Spain 4 Masters 3 Round of 32", https://umpiry.com/match/1997-05-09/hipperdinger-vs-puentes-spain-4-masters-3-r32?utm_source=cite (as of 9 May 1997).