To subscribe to a calendar if you use Google Calendar --
Press the "+" at the bottom right of the calendar and it should open your Google Calendar. Make sure your sports calendar is selected under the calendars list on the left side.
To subscribe to a calendar if you use Apple Ical --
1) Click on the link below the calendar that you want to subscribe to. (You can also open Ical and copy and paste the URL under File>New Calendar Subscription.)
2) Once your Ical opens, click "Create New Calendar."
3) You can leave the name the same or change it.
3) Make sure the calendar is selected on the left side under calendars.