A major tennis achievement (5,4)

I believe the answer is:

grand slam

(Other definitions for grand slam that I've seen before include "Sporting achievement" , "Winning of all of a group of tournaments in tennis" , "Top bid in bridge" , "in which opponents never regain the lead" , "Winning all tricks in a hand of 1 across" .)

I've seen this clue in the Sydney Morning Herald.

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