Use the following tricks to win the coin toss 99% of the time. Pick any team and wait until the coin toss. If it is heads, then 98% of the time the next coin toss will be tails. Press Start and end the game. Pick the team again, then pick tails at the coin toss.
Pick your teams and choose to be the home team. When the other team is selecting, continuously press L + R until the referee announces the results of the coin toss. 99% of the time, it will be the opposite of what the other team picked.