what? That post have all the proves with ESL official links to his profile and the csgo bans, but I guess is too much thought for a tough guy.
"Alexander ‘s1mple’ Kostylev
Alexander ‘s1mple’ Kostylev received a ESL ban for using cheats in 2013. Moreover, he participated in qualifications for EMS One Katowice 2014 during the ban period. The organisers found out about it and disqualified the team, adding two years to s1mple’s ban.
During this period, however, he continued to play for teams including HellRaisers and FlipSid3 Tactics in various tournaments. When the ban expired, he joined Team Liquid and offically returned to the professional scene. "
On 2013 ESL only hold csgo events, not 1.6 or source, do your maths.