The CSGO esports tournament calendar is very unorganised. We regularly have various tournaments being announced a few days before the actual tournament dates. This leads to teams scrambling with their schedules and getting all their reservations in place.
That being said, There is always the possibility of two tournaments or their qualifiers clashing with each other. In this case, two tournament qualifiers have definitely clashed.The Dreamhack Montreal Closed qualifier clash with Eleague Qualifier. This has put several teams in a problem.