MLB: 9 million users on the mobile "At Bat" for the beginning of the 2015 season

9 million people have used the official MLB (Major League Baseball, the North American baseball league) mobile application "At Bat" for the opening days of the regular season in 2015, after the first three days of competition, on 05, 06 and 07/04/2015, announced the league on 07/04/2015.

The "At Bat" app allows fans to stream games, to listen...