In recent years, social media platforms such as Facebook, Twitter, and Instagram have become major players in sports communication. In this study, we focus on the motives for athletes’ use of social media. Applying a mediatization approach, we conceptualize social media as a possible means to bypass traditional (sports) journalism. For sport disciplines that receive minor media coverage, social media provides the opportunity to increase public visibility. Consequently, our study focuses on indoor volleyball as such a marginalized sport. The online survey results from all players of the 24 either all-male or all-female teams of the German first volleyball leagues are combined with a quantitative content analysis of the players’ social media activities. Results indicate that athletes evaluate traditional media coverage of their sport as negative and social media as extremely influential. Still, their postings on social media seem neither to aim at bypassing sports journalism nor to address sports fans directly. Instead, they use social media primarily to connect with friends and family. In conclusion, volleyball players have so far not embraced social media as a tool to promote themselves as sportspersons. At the moment, they do not exploit social media’s potential as channels for professional sports communication.