sport calendar listing all fixtures and events?

For each sport you're interested in, search for a calendar in iCal format. Then subscribe to that calendar in Outlook, iCal or Google Calendar: you'll basically have a calendar of your own. I do this for cricket and football and it works well.

www.socceraddict.net covers football shown on uk tv.

good site if its kept up to date, easy to see what you are trying to find!!

I would love to have this aswell especially for tennis, can then plan my holidays better.

That last post is quite sad, unless you mean it in the manner that you could attend a few tournaments( but somehow I don't think you do).