I was greedy and trusted my favorite tennis players, and lost 3btc on them, I started this session with 1btc and I have made it to 3btc, and I was bet on andy murray when he in washington open, and 0.5btc on kevin anderson, and they 2 got beaten by unknown players, I was not happy cause other famous players beat weaker players.
So your picking on bet based on your favorites. Well this is mostly happen because of this way you supporting your bet but in my case I do bet on sports bet based on their known skills. I don't rely on a popular team even if that team has a higher winning percentage. *
*This can't apply to other sports