How many innings are there in a season of baseball?

Answer 1

For an individual team, 162 games X 9 innings per game = 1,458. That's assuming all games last a full nine innings, which is not always the case. A game CAN be called "complete" at any point after the end of the 5th inning, provided both teams have an equal number of offensive innings, if weather conditions prohibit the continuation of play. I have no idea how often this happens. Also, if the home team is leading in the middle of the ninth inning (or the middle of the 5th-8th if weather forces a stop in play), there is no need to play the bottom half of the inning, and the game is considered complete. And since the home team has a slight advantage in a game, I would say about half of all games end this way. So, even without the 5- to 8-inning weather games, about half of all games end at 8.5 innings. For all teams combined: There are 30 teams, each of which plays 1,458 innings, but since each game involves 2 teams, you have to divide that by 2. 21,870 innings. Again, that doesn't allow for games called at 5, 6, 7, 8, or 8.5 innings. Also, sometimes one or more additional games are required at the end of the regular season to break divisional or wildcard race ties. These are not included. Nor, for that matter, are playoff games and World Series games.

Answer 2

9 innings unless they are tied at the end of the ninth inning. Then they go into extra innings until one of the teams has a higher score at the end of the inning.