Associated Press

Major League Baseball expanded its playoff format to 10 teams Friday, adding a second wild-card in each league.

The decision establishes a new one-game, wild-card round in each league between the teams with the best records who are not division winners, meaning a third-place team could win the World Series.

This is the only change in baseball's playoff structure since the 1995 season, when wild-card teams were first added.

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