If a bet is placed on any player market with the “Sub On, Play On” icon, and that selection/player gets subbed, the bet rolls over to their replacement. If any substitute themselves, is subbed, the feature continues onto their direct replacement.
E.g., If you place a bet on Mo Salah to score 2 or more goals, but he only scores 1 goal, and he is then subbed off for Darwin Nunez; and Darwin Nunez then scores 1 goal, this will take your overall tally to 2 goals, and your bet will be settled as a winner.

Sub On, Play On is implemented when a substitution is made, at which point a bet containing an undetermined market (involving the original selected player) transfers across to their direct substitute (determined by the Data Provider).

Sub On, Play On settlement is applicable to the following markets:

First Goalscorer
Last Goalscorer
Anytime Goalscorer/To Score at Any Time
Next Goalscorer
To Score Two or More Goals/To Score 2 or More
To Score Three or More Goals/To Score a Hat Trick
Score with a Header
Score from Outside the Box
Player Assists
To Score or Assist
Player Shots on Target
Player Shots
Player Tackles
Goalkeeper Saves

Settlement of bets includes Extra Time (if played). This does not include penalty shootouts, or golden goal.