You could create a blog with the intention of writing about your favorite sports team. And you could provide links to their games and their website on social media. You could also highlight the charities they support and the requests they sometimes make to their fans when you’re writing about them online.
By letting other people know about the team you support, you might generate a whole new legion of fans for them. Players sometimes take notice of what their fans are doing, so if what you create goes viral, you might even get to meet your favorite player. You might also get a free seat at their next game! There are endless opportunities that could rise from this method.