Cubs fans have been waiting seven years for a chance to see their team back in the playoffs.
It's all but certain that the Cubs will play at least one postseason game (FanGraphs cites their playoff odds at 99.6 percent) and fans who want to purchase single-game tickets can register for a random drawing.
[RELATED - Jon Lester endorses Jake Arrieta for wild-card game]
The contest began Thursday at 9 a.m. and runs until Sept. 23 at Noon and tickets include a chance for the wild-card game (if the Cubs overtake the Pirates for the first wild card and host that one-game playoff) and the National League Division Series (if the Cubs get past the Pirates in the wild-card game).