The current version of the Wild Card game was first implemented in 2012, below are some random facts regarding past participants. In the National League the visiting team has won 5 of the 7 WC games. In the American League the home team has won 4 of the 7 WC games. The most successful Wild Card teams since the inception of the current format are the 2014 Giants (won World Series) and 2014 Royals (lost World Series). The following Wild Card winners advanced into (but lost) the League Championship Series: 2012 Cardinals, 2015 Cubs, 2016 Blue Jays, 2017 Yankees Only 2 of the 14 Wild Card games have been decided by a deficit of less than 3 runs, and both of those were extra innings games (there have been 3 total games that went into extra innings).