When told she had beaten Mr Caborn, she said: "I am really surprised. How can he not know that?"
Next in the hot seat was Janet Buckley, of Colchester, who works in children's publishing. Could she name the four semi-finalists in the Stella Artois?
"What is that? Cricket? Rugby? Tennis? Oh, Tim Henman. The other guy - Sampras?" One out of four, but already a match for Mr Caborn.
Miss Buckley, 26, knew an Ascot jockey, too. But she couldn't remember his name. "That funny little guy," she said. She meant Frankie Dettori, obviously.
Top of the class was Darren Mercer, 32, who works for the Army. He confidently named three golfers (Colin Montgomerie, Darren Clarke and Severiano Ballesteros), one tennis semi-finalist (Henman) and a jockey (Dettori).
"They are not really difficult if you follow sport," said Mr Mercer, of Kennington. "But it is not very good for a minister, is it?"