Follow everybody I follow lol. Do a good view of this page https://steemit.com/created/comics and kind of good down the past couple of weeks of posts. A view of https://steemit.com/created/comic brings up different posts sometimes as well, and worth checking out. But in your case, check hashtags of specifics sports by name as well as just http://steemit.com/created/sports and http://steemit.com/created/sport

There I feel is a great mixture of people into collecting things, people into vintage items, and people who are artists, and a billion other folks here that sort of do make up the comics community, which houses collectible people I believe. Can't wait to see the posts, I got a bit of sports cards that I have not even checked value on that I should sometime, good luck!