Bankroll unit sizing is the most important beginner skill in sports betting, because even good bettors lose often and need a staking plan that survives losing streaks.

A unit is a standard bet size, usually 1% to 2% of your total betting bankroll, so a $1,000 bankroll gives a $10 to $20 unit.

Flat staking means betting the same number of units, usually one unit, on every bet, regardless of confidence, which keeps variance manageable and results easy to track.

Resize your unit only at set checkpoints, such as monthly, and never increase stakes to recover losses after a bad run.