In some embodiments, the media application may identify players participating in the event from a roster maintained by the user for the side-game. For example, the media application may identify players from the user's fantasy team roster that play on either the San Francisco 49ers or the San Diego Chargers and that are active on the user's roster. In some embodiments, the media application may obtain a set of rules that define scoring opportunities in the side-game for the user as a function of possible actions and players in the event. For example, the media application may determine that the user has an active running back on his fantasy football roster that plays for the San Francisco 49ers, and the media application may retrieve a rule that indicates that the user has a scoring opportunity if the user's running back rushes for a touchdown (e.g., the user may receive 6 points toward the user's fantasy score for the week if the user's running back rushes for a touchdown).