Let's share our biggest winning odd.
Last month I won a bet with 7.5 odd.
I bet on Tennis against Rafael Nadal.

Congratulations to you my friend, but I must say that you risked big, and for you to have won it big, you deserve it. But I will not call myself a coward even as I couldn't replicate your high winning record or have some similar winnings close to it. In my conclusion on what happened, since it is a single winning, it is clear even before mentioning it that you had betted against the most popular star ( Rafael Nadal) that is the only reason why the odds are that big in a single winning. But my friend, I am different from you and try to be as conservative as I can. For this, I only analyzed my stars/teams positively and picked my options due to popularity and based on old and current performances, so I wouldn't have chosen against the popularity which handed you that huge odds.
For this, the highest odd I've ever hit was about 2.7. Like I always say, I am a conservative bettor who also considers my psychology and the management of my gambling portfolio above anything else. I do not allow my feelings or negative temptation of the bigger old to shift my ground on my style of betting and I intend to keep it that way to avoid issues. Someone like you may win this kind of bet once in a way, but I tell you, I win my bets regularly by sticking to my ideology.