The complement to the
pivot system of betting for
roulette that looks at
short term uneven distribution, hunting sleepers uses the
law of averages as a basis that a number or pattern of numbers that hasn't arisen for a period of time reappears in the near future.
Sleepers are most frequently watched for the even money (red/black, even/odd, high/low) and 2:1 odds (columns and dozens). It is generally considered 'good' to bet on sleepers using the following table:
Location Payout Sleeper Number of bets on
after sleeper
red/back 1:1 3-4 3
high/low 1:1 3-4 3
even/odd 1:1 3-4 3
Columns 2:1 4-5 5-6
Dozens 2:1 4-5 5-6
4 finals 8:1 20-30 15
3 finals 11:1 25-40 15
Singles 35:1 36+ 24