The addition of the second wild card to the MLB Playoff System this year offers some interesting scenarios with regard to ties at the end of the regular season on September 29. The rules are here. These rules take into consideration the multiple scenarios that this very competitive year offers. 

The AL standings this morning has Texas and Tampa Bay as wild card leaders, but New York, Cleveland, Baltimore, and, now, Kansas City are within two games of the second wild card leader, Tampa Bay. As they say, “you’ve got to be kidding, right?” 

I wrote on September 10 here that the Indians may have a slight edge over the Yankees. I am not so sure of that now. Cleveland has a hard time in critical games, see here and the Yankees are winning the Fifth Games with regularity. See Fifth Game Theory here.
The Yankees won another Fifth Game last night with a two run ninth inning homerun. Baltimore made it a perfect Fifth Game by scoring one in the bottom of the ninth but lost 5-4.

I am convinced that there is no way to predict the outcome of the AL Wild Card race, but everyone pay attention, it will be wild.