It's the Rockies vs the Diamondbacks in the NL Wild Card game, playing for the chance to advance to the next round of the MLB Playoffs. Want to watch an NL Wild Card game live stream? This year will mark the fifth year of Major League Baseball’s Wild Card play-in game. On Wednesday, October 4, the NL Wild Card game will take place on TBS. For the Rockies and the Diamondbacks, it all comes down to this. Win or go home. It doesn’t get any more exciting than this!