Crossword Genius

You can run after driving in this sporting event (4)

Ross

I believe the answer is:

test

I'm a little stuck... Click here to teach me more about this clue!

'event' is the definition.
(I know that test is a class)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for test that I've seen before include "Analyse" , "water flowing through Hampshire" , "Short exam" , "Check" , "Trial - big match" .)

I've seen this clue in The Sunday Times and The Times.
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