1911 Encyclopædia Britannica, Volume 3… (1911)
“ Another instance of team batting is when a runner is on third-base and the batsman signals that he will hit the next ball. This enables the runner to get a long start, making his scoring nearly certain if the batsman succeeds in hitting the ball fairly. If the ball is hit without the signal and consequent long start by the runner, the latter is frequently put out at the plate, as the infielder who fields the ball will ignore the batsman and throw the ball to the catcher to head off the runner and prevent a run being scored. ”
