In Major tournaments, the veto sequence differs between group stage BO1s and playoff BO3s. What you ban often matters more than what you play. This article breaks down the strategic layers of vetoes, from psychological bans to practice time allocation.
The Major format turns the map pool from "seven maps" into "seven maps plus a timeline." The veto order differs between group stage BO1s and playoff BO3s, and what often decides the match isn't what you do inside the map, but what you throw away outside of it.
1. BO1 Veto Is Subtraction, BO3 Veto Is Addition
In BO1, the flow is ban, ban, ban, ban, ban, pick. You get only one pick, and it's likely a mid-tier map. This means the focus of BO1 preparation isn't "perfect our strong maps," but "ensure our weak maps aren't left to the end by the opponent." Most teams will ban their two most unstable maps consecutively in BO1, then hide their third weak map in the opponent's bans and take a gamble—betting the opponent doesn't want to play it either.
BO3 goes ban, ban, pick, pick, ban, ban, decider. You get two active picks, the opponent gets two, and the final decider is the map neither side actively chose. So the BO3 preparation logic is: first confirm whether your two active maps can secure points, then confirm whether the decider is acceptable as your third choice. If the decider is a map you've never practiced, your first two active maps must go 2-0, otherwise the third map is a free gift.
Pro teams typically divide their map pool into three tiers: must-win maps, playable maps, and banned maps. Two weeks before the Major, the coaching staff will reorder these tiers based on the opponent's veto habits, not their own comfort.
2. The Psychological Ledger of the First Ban: Who Shows Their Hand First
The side that bans first is actually giving information. If you first ban Anubis, the opponent knows you don't want to play a fast-paced mid-map; if you first ban Nuke, they know you don't want to deal with outside and underground. A truly seasoned coach will save the first ban for a map "the opponent might not want to play either," making the opponent misjudge your map pool depth.
Conversely, if you first ban a map you can actually play, the opponent might save it as the decider—forcing you to pick it back up on the fly. This "fake ban" is not uncommon at the Major level, because vetoes are public while scrims are private, and the information gap hides between these two lists.
At the player level, after the first ban there's usually a 60 to 90 second window where the coach and IGL must confirm the second ban. Many teams change their minds during this round because the opponent's first ban reveals the type of pace they don't want to handle.
3. Map Practice Allocation 72 Hours Before the Match
In the three days before the Major, practice time isn't split evenly. The usual allocation is: 30% each for two active maps, 20% for the decider, and the remaining 20% for running the opponent's strong maps for targeted defense. This ratio isn't fixed; if the decider is a utility-heavy map like Inferno, the ratio goes up.
Individual player training also follows the map pool. Players on Nuke will practice outside duels and underground holds more; players on Ancient will recalculate the information tax on donut and mid. The real trouble is the decider map, because it's often no one's main map, and the whole team must realign default holds and execute timings in three days.
One last point: the Major's schedule density means you can't exhaust your map pool in the group stage. Some teams deliberately drop a playable map in BO1 to save stamina for later BO3s. This isn't cowardice; it's schedule math.
The veto isn't a pre-match ritual; it's the first tactical board. What you ban, what you leave, what you gamble on—part of the score is already written before the match starts.