Odd/Even Roulette Strategy
Odd/Even roulette strategy bets that the winning number is odd (1, 3, 5, …) or even (2, 4, 6, …). Payout 1:1, hit rate 48.65% on European, mathematically identical to red/black.
How it works
Bet on Odd or Even before each spin. Pays 1:1. Zero (and 00 on American) counts as neither and loses the bet.
Hit probability: European 18/37 = 48.65%, American 18/38 = 47.37%.
Why it mirrors Red/Black
Both bets cover 18 of 36 non-zero numbers. The 18 odd numbers contain 8 reds and 10 blacks (or vice versa - it varies by interpretation). The numbers do not matter to the math. Win frequency and payout are identical to Red/Black.
Every system that works (or fails) on red/black behaves identically on odd/even.
Flat testing results
Across 200 spins of $10 flat odd on European: expected loss $54, typical drawdown $40-$80, bust rate essentially zero on a $1,000 bankroll.
Progressions on odd/even
Same systems apply: Martingale, Fibonacci, D'Alembert, Labouchere, Oscar's Grind. The bankroll graphs look statistically the same as their red/black counterparts.
Common mistakes
Alternating odd/even each spin to 'cover both' - this is just placing 0 net bet on the same spin and wastes money on commissions when applicable. Each spin you bet on only one.
Believing odd numbers are 'lighter' than even because more low numbers are odd - the wheel does not care about number magnitude.