http://www.techradar.com/news/blizzard-spills-all-the-details-on-its-overwatch-pro-gaming-league

Blizzard has revealed the full details of how the first season of its pro gaming Overwatch League will pan out, with the excitement kicking off in January.

To be precise, the first match will be on January 10 (although there will be preseason exhibition matches from December 6 to 9), with the season divided into four stages lasting five weeks each with a short break in between.