Quit more than 15 years ago.  At my peak, I had a dedicated team (local) we would travel all over California to compete in tournaments at internet cafes, lugging around my giant 100lbs Sony Trinitron monitor.  Online public servers, I would easily maintain a 10/1 KD ratio, kicked from many servers for perceived cheating.  My dedicated group competed in CAL-Invite league (not sure if this is still a thing) but we were probably one the lowest ranked, where teams like CK3, TeC and Wew dominated.  My absolute peak was attending a 3 day LAN party in SoCal with over 80 other people and doing a 40v40 De Dust and going 80/3 after 5 rounds, frequently killing my own clan-mates who were my skill level.  Fun times.  Had to quit because spending 16 hours a day playing CS:S was not good for my life.