Does such a hit mean great success in tennis? (5)

I believe the answer is:

smash

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

'success in tennis?' is the definition.
'smash' can be an answer for 'success' (smash is a kind of success). I'm not certain of the 'in tennis?' bit.

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for smash that I've seen before include "Wreck" , "Break noisely into pieces" , "Shatter violently" , "something very popular" , "Ruin; big (success)" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.