A tennis-mad lad from West Wimbledon met his hero Thomas Berdych when he went behind the scenes at the ATP World Tour Finals last Wednesday (November 23).
Callum Laker, 6, is a patient at Great Ormond Street Hospital but his rare conditions don't stop him living life to the full.
Callum watched Berdych, from the Czech Republic, come from behind to beat Janko Tipsarevic in three sets at the O2 in Greenwich before getting to meet the tennis ace.
A gala linked to the tennis tournament raised more than £400,000 for Great Ormond Street Hospital Children's Charity on November 17.
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