I'd have to say that one of my favorite competitive moments happened with me and my homies back on one of those days we were playing Super Smash bros Melee and we had hyped this match so bad because it was meant to be the clash of the two guys who were the both of us. We even made a video about it

But from my own experiences i'd like to say that one of the most rewarding moments in my competitive scene is when we were early buds on the Smash Tech but we were grinding on it and getting semi competitive. Turns out I had to deal with that guy who plays Capt. Falcon and we've always been rivals since then! Back then I played Ike and he played Snake on Super Smash Bros Brawl and that match was so intense because we were both on the same technical level but also on the mindgame one. I ended up losing to him on loser finals but it was still rewarding to get that far inside our own group! I still hold that memory near my heart!