Question 1

What is the ideal unit size for sports betting?

Accepted Answer

Most professional bettors recommend 1-3% of your bankroll per bet. Conservative bettors use 1%, while more aggressive bettors might go up to 3%. Never exceed 5% on a single bet. Smaller unit sizes protect against variance and reduce the risk of going bust during inevitable losing streaks.

Question 2

What is risk of ruin in sports betting?

Accepted Answer

Risk of ruin is the probability of losing your entire bankroll. It depends on your edge (win rate vs. odds), bet size, and bankroll. Even profitable bettors face risk of ruin if they bet too large a percentage of their bankroll. A bettor with a 55% win rate at -110 odds and 2% unit sizes has a very low risk of ruin, while a 10% unit size dramatically increases it.

Question 3

Should I use flat betting or percentage-based betting?

Accepted Answer

Percentage-based betting (recalculating your unit as a % of current bankroll) is mathematically superior because it increases bets when winning and decreases when losing, similar to the Kelly Criterion. Flat betting (same dollar amount each bet) is simpler but doesn't compound gains. For most recreational bettors, flat betting with periodic recalculation (weekly/monthly) is a good balance.

Question 4

How many bets do I need to overcome variance?

Accepted Answer

Due to variance, short-term results can deviate significantly from your true win rate. With a 55% true win rate, you might need 500-1,000+ bets before your actual results reliably reflect your edge. This is why bankroll management and patience are critical - even skilled bettors experience extended losing streaks.

Bankroll Management Calculator

Frequently Asked Questions

Related Calculators