I think a core integration is probably unlikely as a lot of these API’s aren’t public and/or charge for access. Here’s a couple of options though.
- Got Home Assistant to grab the game info for my NHL team and trigger for game starts, goals, and end of game
- NHL Stats API Integration Into Home Assistant (custom integration)
- Goalfeed integration (NHL and MLB)
- How to get your favourite MLB team’s scores in Home Assistant
- Binary sensor for when your NFL team is playing