When you bet the under 2, 2.25 or under 2.5 in soccer for 1 unit always bet the draw for 1/3 or 1/2 unit too.
If a game is low scoring, no more than 2 goals, the odds of being a draw are 50%. 0-0 or 1-1 vs 1-0 or 2-0. It also serves as a hedge on a high scoring draw.
