three time winnerjohn higgins has been knocked—out of the uk snooker championship in the quarterfinals. he lost 6 frames to three to the chinese teenager — yan bingtao who now goes on to play ding junhui in the last four. the other quarterfinals are going on right now. these aer live pictures — northern ireland's mark allen is playing the veteran nigel bond. it's best to 11 frames. allen leads 5—4you can watch that on the bbc sport website and the red button. and on the other table scotland's stephen maguire is playing welshman matthew stevens. 4—all. the former world number one tennis player — caroline wozniacki has announced she's retiring after next month's australian open. she was the first scandinavian player to top the rankings. and says she's giving up having "accomplished everything she could ever have dream of on the court". i think she has more than fulfilled her potential. i think a lot of people would've said the opposite, that she has actually overachieved, because you know, she was a great competitor, and you remember, she got some fineness of the usa i believe