Major League Baseball (MLB) is the largest professional sports league in the US and Canada. In total, 30 teams play in Major League Baseball: 15 in the National League (NL) and 15 in the American League (AL).
Today MLB consists of 30 teams, 29 in the US and 1 in Canada. Teams play 162 games each season, and five teams in each league advance to a four-round postseason tournament that culminates in the World Series, a series of championships to the best of seven championships between two league champions.
During the season, teams compete for five playoff spots in their respective leagues. To secure a spot, a team must either win their division or capture a wild card spot with one of the top two non-winners in the entire league. After a season of 162 games, additional games may be required to determine postseason participation.
When the regular season ends after the first Sunday in October, ten teams advance to the postseason playoffs. These ten teams are composed of six teams that are division champions, earning the best overall regular season win / loss record for their respective divisions, and four teams that are wild card teams, each of the two teams in their respective leagues earning best regular season win-loss record, but not division champions. Four rounds of a series of games are held to determine the champion.
A local broadcaster has priority to televise games of the team in their market over national broadcasters. For example, at one time TBS showed many Atlanta Braves games nationally and internationally in Canada. Fox Sports Networks also show many games in other areas. If the Braves played a team that FSN or another local broadcaster showed, the local station will have the broadcast rights for its own local market, while TBS would have been blacked out in the same market during the game.