There’s nothing like the pressure of the Ryder Cup. Especially during the singles on Sunday.

Nobody succumbed to that pressure worse than Mark Calcavecchia. Up 4 with 4 holes to play against Colin Montgomerie during the 1991 Ryder Cup, Calc, the winner of the 1989 British Open, choked–big time. His shank off the tee at 17 ranks among the worst shots in golf history.

Watching it again, you can still feel his pain 21 years later.