As far as I know, there isn't such a thing as "the BBC live sports feed", you'll need to find it on the website at the time it goes out. It could be that they just weren't showing the bowls online - after all, I doubt there's the demand. You could also try www.bbc.co.uk/bbc1 or www.bbc.co.uk/bbc2 and click "watch live".
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If at home, it might be that you nead to update your RealPlayer software.