What's the best way to get the achievement "Bad Day"? I tried it two times vs my wife at League (Last season one time and today), because she is the strongest opponent at League. Before the game today, I was 11 points ahead to her, so I tought, I'll give it a second try, because my team have to be really stupid, to lose this League.

I put an illegal formation (no defender) and a striker at GK.

First try, I only lost 4:0... today she I was down 6:0... but my stupid team scored at the end 2 goals (or her Keepers is just an idiot), and I lost only 6:2...
Is there a way/formation combination of my opponent and me, that makes my "Bad Day"?