CS2 demo stats: ADR, KAST and opening duels
Every CS2 stat is arithmetic on recorded events: kills, damage and round boundaries. ADR is damage per round. KAST is the share of rounds where you got a kill, an assist, survived or were traded.
The two worth acting on are opening duels and traded deaths. Both are decisions you make before aim matters.
What does ADR mean in CS2?
ADR is average damage per round: total damage dealt to opponents, divided by rounds played. It counts damage that did not become a kill.
Compare your ADR with your kills, not with a benchmark. High kills and low ADR means you finish damaged enemies. Low kills and high ADR means you do the setup and lose the finish, which is usually an aim or position problem. The two need different practice.
What does KAST mean in CS2?
KAST is the percentage of rounds where a player got a Kill, an Assist, Survived, or was Traded. It measures how often someone contributed, not how much.
The last letter matters. Being traded counts, so KAST credits dying in a useful spot. A player who dies first but always where a teammate punishes the killer keeps a decent KAST. The same player dying alone does not.
What are opening duels and traded deaths?
The opening duel is the round's first kill. A round with no kill has none. Summary shows each player's opening kills and deaths, and Rounds names the opener and victim each round with buttons that jump into either player's view in 3D (PRO).
| Pattern | Usual meaning | What to change |
|---|---|---|
| Many opening kills and deaths | You are the entry, on coin-flip duels | Utility before the peek |
| Few opening kills, many deaths | You take duels you are not set up to win | Stop peeking first, or peek with support |
| Few of either | You arrive after the round is decided | Move earlier |
| Opening deaths rarely traded | You die where nobody can punish it | Positioning, not aim |
The last row is the cheapest fix in the game. Trade rate depends almost entirely on where you stand relative to a teammate.
Watch a real round, take over and play it. Today's moment is free in 3D, with no account.
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Where do CS2 demo stats come from?
From events in the demo. Each kill has an attacker, a victim, a weapon and flags like headshot. Each damage event has an amount and a hit group. Each round has a start, an end of freeze time and a result. A scoreboard is sums over those records.
That is why two tools can show different numbers for one match and both be right. They choose differently about round edges, self-damage or what counts as an assist. A stat is only as good as its definition.
In Memorin, press R for the review panel. Summary is the per-player table. Rounds has a card per round. Events is a filterable log of kills, damage, bomb, utility and reload events. Summary can export the match as JSON or the player table as CSV.
What is the rating number in a CS2 demo?
A rating combines several per-round numbers into one, so players can be sorted. Memorin's Summary shows a Rating 2.0 estimate computed from KAST, kills per round, deaths per round, an impact term and ADR. It carries an asterisk because it recreates a public formula from demo events. It is not an official number.
Use a rating to sort, not to judge. One match is far too small a sample for a composite number to be stable.
Does a CS2 demo show utility stats?
Yes. Summary counts utility damage per player. The Utility tab and the event log record every grenade, with paths you can draw in 3D (PRO). Flash assists and utility damage are recorded. Whether a smoke helped is not. See how to review smokes and grenades.
Can I see each team's buy in a demo?
Yes. Rounds labels each team's buy as full, force, light or eco, from team money and equipment value, next to the result, the site, multikills, clutches and utility thrown. A lost eco is noise. A lost full buy with no plant is a problem you can watch.
Which CS2 stat should I try to improve?
Opening duels and traded deaths. You choose when to take first contact and whether you die where a teammate can punish it. Headshot rate depends on weapons and range. Kills depend on how long you survive. Rating depends on all of it.
- Find the gap. Open Summary and find your worst pattern, usually opening deaths or untraded deaths.
- Jump to those rounds. Use Rounds instead of watching the whole match.
- Watch POV, then free camera (3D, PRO). Note what was actually available.
- Play it. Open the one that repeats as a Replay Moment (PRO) and try the other option.
FAQ
What does ADR mean in CS2?
ADR is average damage per round: the total damage a player dealt to opponents, divided by the number of rounds played. It counts damage that did not turn into a kill.
What does KAST mean in CS2?
KAST is the percentage of rounds in which a player got a kill, an assist, survived, or was traded. It measures how often someone contributed, not how much.
What is a good KAST in CS2?
There is no fixed good number, because it depends on role and on how the tool defines a trade. Compare your KAST across your own matches, and look at the rounds where you did none of the four.
What is the rating in a CS2 demo review?
Memorin shows a Rating 2.0 estimate computed from KAST, kills per round, deaths per round, an impact term and ADR. It recreates a public formula from demo events and is not an official number.
What is an opening duel in CS2?
The first kill of a round. Every round with a kill has exactly one. Opening kills and opening deaths per player show who takes first contact and how often it goes wrong.
Which CS2 stat should I actually try to improve?
Opening duels and traded deaths, because both are decisions rather than outcomes. You control when you take first contact and whether you die where a teammate can punish it.
Can a demo tell me why I lost the round?
No. A demo records what happened, not why anyone chose it. Stats point you at the rounds worth watching, and watching them supplies the reason.