Other forms: innings
Most baseball games are divided into nine innings. Each inning gives both teams a chance to be up at bat until they get three strikes.
Cricket was the first sport to mark periods in innings, or "a team's turn in action during a game," emphasis on the in. While a cricket match can have four innings, the majority of baseball games have nine (though in the case of a tie, an unlimited number of extra innings can be added at the end of a game). At the start of each new inning (and half-inning), the teams switch places and the umpire yells, "Play ball!"