Pokemon XY&Z - episode 27 - 18 May, 2016

Ash battles against Gym Leader Wulfric of the Snowbelle City Gym, using Hawlucha, Talonflame, and Greninja to combat Wulfric's Ice-types. However, needing only Abomasnow and Avalugg, Wulfric hands Ash a disastrous defeat, who heads off into the forest by himself to answer the doubts in his heart. (Source: Wikipedia)