5 July 2013 Last updated at 14:33

Wimbledon 2013: Anne Keothavong loses voice during commentary stint

British tennis player Anne Keothavong swaps her racquet for a microphone during this year's Wimbledon Championships.

Unfortunately, as BBC London discovers, she has to try to describe a match after losing her voice.

Keothavong lost 6-4 6-0 to Spain's Garbine Muguruza in the first round of the women's singles.