Research question: While marketers acknowledge the critical role of developing long-term strategies that enhance the value of the organization, collaborative and co-creation service activities are gaining importance. At sporting events, sport team personnel collaborate with sport consumers to create the event experience. Sport consumers, however, rarely attend sporting events alone. Instead, sport consumers join and participate in networks of like-minded fans and engage in collaborative and co-creation consumption activities. In sports, these networks are called sport fan consumption communities. The purpose of this research is to create and test a hypothesized model of membership and participation in a sport fan consumption community and fans' behavioral intentions. Research methods: In total, 10 hypotheses were generated and tested using a sample of students and alumni (n = 627) from a large Division I-A (NCAA) university in the southeastern USA. Using confirmatory factory analysis procedures, reliability and validity evidence for 15 items measuring the 5 hypothesized constructs was found using approximately half of the data (n = 314). Subsequently, structural equation modeling with bootstrapping procedures was used to examine the direct, indirect (mediated) and total effects with the remaining data (n = 313). Results and findings: The empirical results supported all 10 hypothesized relationships. The results suggest that both a feeling of membership in the sport fan consumption community and participation in the rituals and traditions associated with the community independently and in coordination lead to increases in future intentions to attend the university's (gridiron) football team's games, purchase the team's merchandise, and recommend the team's games to others. Implications: For sport managers and marketers, resources should be allocated to support the creation and development of sport fan consumption communities in order to improve the relationships between fans and their team.