The issue likely stems from the event type — only events with the following event types are displayed on the athletic calendar:
- Athletics: Other
If an event is marked as 'All-School Events' for example, it won't display on the athletics calendar. If you are not seeing athletic events on the athletics calendar:
- Navigate to the Calendars homepage and run a Find Group Events query.
- Search for the event(s) and click them.
- Check the "Event Type" field and update to one of the above.