Mark Nielsen defeated Jordan Kerr 6-3 7-6 in the Australia 2 Masters 3 round of 32 on hard. The upset overturned the form book — Jordan Kerr came in leading the head-to-head 1–0. Mark Nielsen claimed a first win over Jordan Kerr in two meetings, levelling the head-to-head at 1–1.
Nielsen M. took it in straight sets.
Mark Nielsen beat Jordan Kerr 6-3 7-6. Umpiry, "Mark Nielsen vs Jordan Kerr — Australia 2 Masters 3 Round of 32", https://umpiry.com/match/1999-05-08/kerr-vs-nielsen-australia-2-masters-3-r32?utm_source=cite (as of 8 May 1999).