Super Sub betting in Ligue 1 works exactly like Super Sub betting in other leagues. When you place a bet on a player prop market marked with Super Sub, and that player gets substituted during the match, the substitute player automatically takes over your bet. Your bet continues with the new player - you don't lose your stake just because a substitution happened.
This is particularly valuable in Ligue 1 matches where substitutions are common - such as when teams are chasing a goal, managing player fitness, or making tactical changes. Instead of worrying about your player being subbed off, Super Sub ensures your bet continues with the replacement player.