*Something at which you've been a champion or the best.*

I'll just use a recent example since I don't feel like reminiscing in the past today. Well, this happened in the past, but it was just a couple days ago so it's not that far back. Anyways, it was finals week and for science, I got the highest grade (an 88). And since the class average was a 71, he decided that he'd add 12 points to everyone's grade, giving me 100! Yay!
Then, in geometry I got 100 on the test without any points added! It was all me! I got all 50 questions right and I'm so proud of myself!