Wayne Arthurs defeated Jason Cask 6-3 6-4 in the Australia 3 Masters 1 round of 32 on clay. The upset overturned the form book — Jason Cask came in leading the head-to-head 1–0. Wayne Arthurs claimed a first win over Jason Cask in two meetings, levelling the head-to-head at 1–1.
Arthurs W. took it in straight sets.
Clay: Arthurs W. leads 1–0 · Carpet: Cask J. leads 1–0
Wayne Arthurs beat Jason Cask 6-3 6-4. Umpiry, "Wayne Arthurs vs Jason Cask — Australia 3 Masters 1 Round of 32", https://umpiry.com/match/1991-10-07/arthurs-vs-cask-australia-3-masters-1-r32?utm_source=cite (as of 7 October 1991).