Mats Wilander defeated Boris Becker 6-4 6-4 6-2 in the Australian Open quarter-final on hard.
Wilander M. took it in straight sets.
Mats Wilander beat Boris Becker 6-4 6-4 6-2. Umpiry, "Mats Wilander vs Boris Becker — Australian Open Quarter-final", https://umpiry.com/match/1990-01-15/becker-vs-wilander-australian-open-qf?utm_source=cite (as of 15 January 1990).