Systems and methods for generating multidimensional data structures based on fantasy sports account activity

Systems and methods for generating a multidimensional data structure based on fantasy sports account activity are described herein. Processors can maintain user profiles, each user profile having player lineups associated with fantasy sports contests. The processors can identify, for a first user profile, player lineups of the first user profile and respective contests for which the player lineups were entered. Each player lineup including players having players attributes. Each contest having contest attributes. The processors can generate, for the first user profile, a multidimensional data structure including a plurality of features. Each feature can have a respective value that is based on the player attributes corresponding to the players included in the player lineups and the contest attributes corresponding to the contests for which the player lineups were entered. The processors can then provide content selected using the generated multidimensional data structure to a device associated with the user profile.