A rounder bet is made up of 3 singles and 3 any to come (ATC) doubles. If the single bet wins, the same stake is then used on a double for the other two selections.
For example you have an Rounder on Red Rum at 2/1, Many Clouds at 5/1 and Long Run at 3/1 with a £1 unit stake.
- If Red Rum wins, you then place a £1 double on Many Clouds and Long Run.
- If Many Clouds wins, you then place a £1 double on Red Rum and Long Run.
- If Long Run wins, you then places a £1 double on Red Rum and Many Clouds.