Avoid manually entering events. It's easy to add iCal invites (.ics files) to your Google calendar if you follow these simple steps.

Learn how to import iCal files into Google Calendar and Outlook Calendar by the following the steps mentioned in the post.

For some reason, you can't add more than one iCal subscription in the NCAA football category. So I go to FoxSports and try it. Same result. Only one calendar from each of the sports.