I played through the Crystal cup, got to Diddy Kong and won the first game against him, then in the last 2, he started to use the "Red Card".
By using this he took all of my players off the field and was able to take as many Megastrikes (4 in a row), in which he hit the orange twice but with all 6 shots. He scored 2 goals out of 4 megastrikes, and managed to beat me 2-1, in the last two games, thus winning the series.
It seems nearly impossible to beat him, the red card is ridiculous.
Does anyone have any suggestions?