Bodyline, also known as fast leg theory bowling, was a cricketing tactic devised by the English cricket team for their 1932–33 Ashes tour of Australia. It was designed to combat the extraordinary batting skill of Australia's leading batsman, Don Bradman. A bodyline delivery was one in which the cricket ball was bowled at pace, aimed at the body of the batsman in the expectation that when he defended himself with his bat, a resulting deflection could be caught by one of several fielders deliberately placed nearby on the leg side.

Cricket is a bat-and-ball game that is played between two teams of eleven players on a field at the centre of which is a 22-yard (20-metre) pitch with a wicket at each end, each comprising two bails balanced on three stumps. Two players from the batting team stand in front of either wicket, with one player from the fielding team bowling the ball towards the striker's wicket from the opposite end of the pitch. The striker's goal is to hit the bowled ball and then switch places with the nonstriker, with the batting team scoring one run for each exchange. Runs are also scored when the ball reaches or crosses the boundary of the field or when the ball is bowled illegally.