You don’t have to share the same sports interests to have a sports conversation.
Which means you don’t have to predict the fandom of the person you’re talking to before you start the conversation.
If you’re a baseball fan go ahead and ask your colleague if they saw the game last night. Wait for the response. Your colleague will tell you if they are a baseball fan and watched the game, or if they spent time watching golf instead.
Use their response to formulate follow-up questions and guide the conversation. Don’t overthink which one of these sports conversation starters will work this week. Pick one and see where the conversation takes you.