A system for operating a sports gaming event using a graphical interface of a computing device application, the system including: a processor; and a memory coupled to the processor, wherein the memory stores instructions that, when executed by the processor, cause the processor to: receive sports data about a sporting event via a network; access a database of historical statistics relating to the sporting event and to players playing in the sporting event; select at least one betting scenario from a betting scenario database based on the sports data and the historical statistics; calculate an initial probability of the betting scenario occurring based on the sports data and the historical statistics; generate an initial price of the betting scenario based on the initial probability; display the betting scenario and the initial price on the graphical interface; and receive a response to the betting scenario from at least one user.