Major League Baseball (MLB), the highest level of play in North American professional baseball, effectively operates as a single league and as such it constitutes one of the major professional sports leagues of the United States. It is currently composed of 30 teams—29 in the United States and 1 in Canada (the Toronto Blue Jays). In conjunction with the International Baseball Federation, the MLB also manages the World Baseball Classic.
2014 and 2015 MLB New style Jerseys According the follow size chart
