Competes in providing good services at a tourist centre (5)
I believe the answer is:
races
'competes in providing good' is the definition.
'races' can be an answer for 'competes' (racing is a kind of competing). I'm not certain of the 'in providing good' bit.
'services at a tourist centre' is the wordplay.
'services' becomes 'aces' (ace is a type of serve in tennis).
'at' is a charade indicator (letters next to each other) (I've seen this in other clues).
'centre' says to take the centre.
The middle of 'tourist' is 'r'.
'aces' put after 'r' is 'RACES'.
Can you help me to learn more?
(Other definitions for races that I've seen before include "Events at Epsom or Ascot?" , "Goodwood events" , "Sprint and marathon?" , "Competitions; ethnic groups" , "Operates at excessive speed" .)