The CS2 data and odds glossary
Plain-English definitions of the terms you meet in CS2 and esports data.
A
- ADR
- ADR in CS2 is average damage per round, the cleanest single measure of a player's output.
B
- Bo3 (best of three)
- A Bo3 (best-of-three) is a CS2 series where the first team to win two maps takes the match.
C
- Clutch (1vN)
- A clutch in CS2 is a round won by the last player alive against one or more opponents (1vN).
D
- De-vigging
- De-vigging removes the margin from odds, rescaling the implied probabilities back to 100% to recover the market's fair, comparable probability estimate.
E
- Eco round
- An eco round in CS2 is a deliberate save: a team buys almost nothing to afford a full buy next round.
- Entry frag
- The entry frag is the first kill of a CS2 round.
F
- Force buy
- A force buy in CS2 is spending everything on a round you can't properly afford, usually to deny an opponent's economy.
H
- Head-to-head (H2H)
- Head-to-head (H2H) in CS2 is the prior meeting record between two teams.
- HLTV Rating
- HLTV Rating is the composite CS2 player rating where 1.00 marks an average professional game, rolling kills, damage, survival and consistency into one number.
I
- Implied probability
- Implied probability converts decimal odds into a percentage chance: it is simply 1 divided by the price, and across a market the total always tops 100%.
K
- KAST
- KAST is the share of CS2 rounds where a player gets a kill or assist, survives, or is traded.
M
- Map veto
- The map veto is the alternating ban-and-pick sequence before a CS2 series that decides which maps are played.
- Market line
- The market line is a single fair-odds probability derived from multiple bookmakers and exchanges, with the margin removed and no individual source named.
T
- Trade kill
- A trade kill is killing the opponent who just killed your teammate, within a short window.
V
- Vig (overround)
- The vig, or overround, is the margin built into betting odds.
- VRS
- VRS, the Valve Regional Standings, is the official CS2 points system that decides Major invites.