 A full inning consists of six outs, three for each team; and, in Major League Baseball and most other adult leagues, a regulation game consists of nine innings.The visiting team bats in the first half-inning, the top of the inning, derived from the position of the visiting team at the top line of a baseball line score.The home team's half of an inning is the bottom of the inning, and the break between halves of an inning is the middle of the inning.