If a scratch is declared, it means that a selection will not be participating in the event.
The settlement process will depend on the type of bet that you placed.
Straight bets
If your selection is a scratch your bet is deemed no action, and your wager is returned.
Parlays
For bets such as Parlays, if a selection is a scratch, that selection is deemed no action. However, your bet still stands, and is settled on the remaining selections within the parlay.
For example, in a 3 Leg Parlay, if one selection is a scratch, the bet becomes a 2 Leg Parlay.
Important Tip
Futures bets are All in, run or not, so if your selection withdraws, your bet will lose unless otherwise stated.