Run champion dog here? (9)

I believe the answer is:

racetrack

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

'here?' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.

'run champion dog' is the wordplay.
'run' becomes 'r' (cricket abbreviation).
'champion' becomes 'ace' (both can mean a person excelling at something).
'dog' becomes 'track' (synonyms).
'r'+'ace'+'track'='RACETRACK'

Can you help me to learn more?

(Other definitions for racetrack that I've seen before include "Spa, say" , "Brands Hatch, perhaps" , "Newmarket, say" , "Circuit" , "Competitive course" .)

I've seen this clue in The Times.

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.