Odds & margin

How esports odds are written, what they imply about probability, and how much of every price is the bookmaker's margin.

2guides

CH1 · Odds6 min

How esports betting odds work: decimal, fractional, American and implied probability

Esports odds in all three formats, a conversion table, the formulas behind it and how to turn any price into an implied probability. Fictional examples.

9 Nov 20261 tables

CH1 · Odds5 min

Bookmaker margin (overround) explained, and how to remove it

How to measure the bookmaker's margin on a 2-way and 3-way esports market, and how to strip it out to estimate fair odds. Worked fictional examples.

9 Nov 20263 tables