Use NGIN App
Download and install app from http://itunes.apple.com/us/app/sport-ngin/id499597400?mt=8 You can just search for NGIN in the app store also.
Find a team
You are subscribed to this team.
And / Or add to your iPhone calendar
Copy the following to your clipboard on the iPhone: webcal://www.magfasoftball.org/ical_feed?tags=495657