Sports Illustrated have just released into Beta their Windows Mobile client which will allow you to keep up to date with your 4 favourite teams as well as and your teams games to your Outlook calendar.
Scores, schedules and standings are updated every time you launch the application.
To get the beta you can either:
Use your Windows Mobile phone to text "MYSI" to 58585 and we’ll send you a text message* with a link to download MySI Mobile beta. Just click on the link and we’ll walk you through what to do next.
Or you can simply go to:
http://www.mysi.actionengine.com/provision on your phone’s mobile browser and follow the instructions provided. Please note that this URL is only supported on your mobile phone and not on your PC.
You can get more details HERE