A professional CS2 player explains that the Major map veto is not random—it's an information war where ban order, map pool trimming, and psychological tactics decide the game before it starts.
Many people watch the Major map veto and just see six map icons flashing on screen, then the caster shouts, "They picked Ancient." But for those of us sitting at the pick table, those thirty seconds are an information war: who bans first, who picks first, which map is a smoke screen, and which map is the real trump card—all hidden in the BP order.
1. The Ban Order Isn't Random: What First Ban Buys
The Major BO1 and BO3 veto logic differ, but the core is the same—the side that bans first is often buying "information compression." You ban the opponent's highest win rate map from the last three matches, not to take away a map, but to force them to reveal their training direction on the remaining maps.
For example: if a team has won two straight matches on Inferno with the same B-site fast attack, the opponent's first ban is likely not Inferno, but Mirage—because Mirage is a map they don't want to play, and banning it first saves later choices. This "ban your own weak map first" approach is especially common in BO1, because BO1 has no margin for error; you first ensure you aren't dragged into an unfamiliar rhythm.
Conversely, in BO3, the side that bans first is usually more aggressive. They ban the opponent's "comfort map," even if they can play it themselves. Why? Because BO3 picks alternate: you ban one, the opponent has to choose from the rest, and choosing itself is pressure.
2. Map Pool Trimming: The "Three-Map Principle" in Player Prep Notes
During Major preparation, every team trims its map pool. Not all maps need to be practiced to a playable level; instead, the pool is divided into three tiers:
- Must-play maps: At least two, which can be brought out regardless of opponent, with tactics that don't rely on a specific player's pop-off.
- Target maps: One or two, specifically for certain opponents—e.g., if the opponent's Ancient defense has a hole, you train Ancient as a target map.
- Dropped maps: The rest are not actively picked, but you need basic default tactics to avoid being completely lost if dragged in.
This tiering isn't decided by the coach on a whim; it grows from players' prep notes. After each scrim, every player writes: how many times I died on this map today, which death was due to utility not being in place, which was due to slow comms. These notes aggregate into the basis for map pool trimming.
A common misconception is: "I have good aim, I can play any map." But Major opponents won't give you aim duels; they'll use utility and positioning to drag you into an unfamiliar rhythm. So the essence of map pool trimming is acknowledging your weaknesses and then training them to a "not dragging the team down" level.
3. Player Prep Notes: From "Bad Feel Today" to "Where Should I Stand on This Map"
Prep notes aren't a diary; they're a tool. The most effective format I've seen is:
- Round number + map + position: e.g., "Mirage round 8, I'm on B second floor, they threw two smokes, I fell back to market."
- Decision point: Why did I fall back? Was it because of footsteps, or because a teammate called info?
- Alternative: If I could redo it, could I not fall back and instead ask a teammate for a re-flash?
Write enough of these and you'll see your decision patterns. For example, if you always fall back when the opponent smokes, then next time they smoke just to push you back and take your position. You need a "no fall back" plan, even if it's just standing two seconds longer, to disrupt their rhythm.
The Major schedule is long, and player form fluctuates. The purpose of prep notes is to let you perform above the passing line through process and habits even when you're not at your best.
4. Psychological Warfare at the Pick Table: Who Blinks First
Finally, a easily overlooked point: psychological warfare at the pick table. Some teams deliberately stall during picks, watching the opponent's expressions and reactions. Some players deliberately say "ban whatever" during bans, but they've already decided.
These details don't directly decide the outcome, but they influence the opponent's judgment. If you can make the opponent think you don't want to play a certain map, they might leave it for last, only to find it's actually your strong map.
The Major pick table isn't a casino; it's a match that starts early. Whoever prepares more thoroughly gains an extra point before the game begins. That point is often all there is in a BO1.
— From someone who has sat at the pick table many times.