Celtic's monumental victory over Barcelona earned acclaim from all over the continent on a good night for British clubs in the Champions League. The previous evening however Manchester City faltered again in Europe - as did Andy Murray at the O2 Arena as he lost to Novak Djokovic for the 10th time.

Away from the football and tennis, Lady Gaga unveiled her Brazilian allegiance (steady) and an Iron met a Freddie in the sport pictures of the week...

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  • Peter Siddle runs in to bowl during day one of the First Test match between Australia and South Africa

  • Sergio Agüero enjoys the tennis at the O2...

  • Andy Murray doesn't as he loses to Novak Djokovic

  • Manchester City manager Roberto Mancini (right) complains to referee Peter Rasmussen after the final whistle...

  • Before directing his ire towards a cameraman

  • A surrounded Cristiano Ronaldo

  • The Djoker stoops

  • Trouble getting it off? Jack Wilshere struggles with his Arsenal shirt

  • Moses is Chelsea's saviour

  • Lights out for United. But only temporarily, as they went on to beat Braga 3-1

  • Kevin Pietersen evades a bouncer en route to his warm-up ton

  • Roger Federer strikes another elegant pose

  • Fabrice Muamba returns to the scene of his collapse eight months on

  • My ball! Jermain Defoe celebrates his Europa League hat-trick

  • They can't believe it 1. Celtic beat Barcelona

  • Celtic go wild

  • They can't believe it 2. Celtic beat Barcelona

  • Tottenham's Jewish badge of honour is proudly displayed despite pressure from some quarters

  • Gaga has a Brazilian

  • Mike Tyson implores Freddie Flintoff to ditch Jacamo