If you have a laptop with "Flash" or your Microsoft Surface has "Flash" then you can watch many live sporting events on - wiziwig.tv.
Wiziwig.tv | Live sports schedules. Watch free streams and the best sports events live on your pc.
The actual broadcast times and available channels are usually only shown 1 hour prior to the television broadcast.
You can watch worldwide events on wiziwig - play with it and see if it works for you.