投手犯規

Also known as balked

thumb|right|upright|Bob Shaw (baseball)|Bob Shaw holds the major league record for most balks in a single game, five, in 1963. In baseball, a balk is a set of illegal motions or actions that a pitcher may make. Most of these violations involve pitchers pretending to pitch when they have no intention of doing so. In games played under the Official Baseball Rules that govern professional play in the United States and Canada, as well as NCAA rules governing college baseball, a balk results in a dead ball or delayed dead ball. In certain other circumstances, a balk may be wholly or partially disre