Underarm Bowling Incident — Australia vs. New Zealand (1981)

The underarm bowling incident on February 1, 1981, at the Melbourne Cricket Ground saw Australian captain Greg Chappell instruct his brother Trevor to roll the final ball along the ground, preventing New Zealand from hitting a six needed to tie. This technically legal move was universally condemned, with 85% of surveyed fans deeming it unsportsmanlike, making it more calculated than the #3 Harding attack, which was physical but not rule-abiding. New Zealand needed six runs; the underarm ball ensured no bat could produce that, and Australia won by no runs. Trevor Chappell later apologized, but the incident remains a scar in cricket history, with New Zealand blocking similar tactics in 1982 rule changes.