Mark Calcavecchia won his only major championship in a playoff over Greg Norman and Wayne Grady.

[8] Norman shot a course record 64 (−8) in the final round to get into the playoff.

Calcavecchia also scored a birdie at the second, Grady only making par at both: but at the short 17th, Calcavecchia was the only one to make par while Norman dropped a shot, back into a tie for the lead, and Grady also bogeyed it to be two shots behind.

Then Calcavecchia made a birdie at the last, and Grady a regulation par, whereas Norman found two bunkers in succession and then mishit his third shot out of bounds, following which he picked up his ball and conceded without completing the hole.

Thursday, 20 July 1989 Friday, 21 July 1989 Amateurs: Claydon (E), Karlsson (+1), Els (+4), Evans (+5), Dodd (+10), Milne (+10), Hare (+11), O'Shea (+11), Noon (+14), Meeks (+17).