Every major esports title runs on its own tournament calendar, and understanding the shape of that calendar — which events matter most, how qualification works, and roughly when things happen each year — makes it far easier to follow the scene and to know when to check for the current schedule. This cluster breaks down the major recurring tournaments across League of Legends and CS2, along with how to find accurate, up-to-date dates each year.
Why tournament structure matters more than any single date
Dates shift from year to year, but formats are far more stable. League of Legends Worlds has run as an annual world championship since 2011, MSI serves as its mid-season counterpart, and CS2’s major circuit (built on the Valve-sponsored Major format inherited from CS:GO) has followed a broadly consistent structure for years. Once you understand how an event is built — how many teams qualify, how group stages feed into brackets, what regional leagues feed into international events — you can follow any given year’s edition without needing to relearn the format from scratch.
Because this section is reference content rather than a live feed, we focus on explaining these formats and pointing you to the right official sources rather than publishing specific dates or brackets that go stale within months. For the current year’s exact schedule, always check the tournament organizer’s official site — Riot Games’ LoL Esports and MSI/Worlds pages, or Valve and the host organization for CS2 Majors.
What’s covered in this cluster
League of Legends events — the World Championship (Worlds), the Mid-Season Invitational (MSI), and regional league schedules like the LCS, each explained in terms of format and significance rather than a single year’s results.
CS2 tournaments — the major circuit and other significant events on the Counter-Strike calendar, including how the Valve-sponsored Major format works and why it carries more weight than most other CS2 events.
Specific event pages — including individual pages on events like IEM Cologne and MSI, covering format and context for readers searching for a particular tournament by name.
Using tournament schedules for betting research
Knowing when an event happens is table stakes; knowing what it means is the more useful part. A team’s performance in a regional league doesn’t always translate directly to international brackets, where the field is deeper and unfamiliar playstyles show up more often. Use the format explanations in this cluster to understand what a given event actually tests, then check the official schedule for exact dates before assuming anything about who’s playing when.