Contrasting points in a track promoter (7)
I believe the answer is:
sponsor
'promoter' is the definition.
(I've seen this before)
'contrasting points in a track' is the wordplay.
'contrasting points' becomes 'ns' (N is an example. I am not sure about the 'contrasting' bit.).
'in' is an insertion indicator.
'a track' becomes 'spoor' (spoor is a kind of track).
'ns' placed within 'spoor' is 'SPONSOR'.
Can you help me to learn more?
(Other definitions for sponsor that I've seen before include "One paying for, eg, event" , "One financially supporting an activity" , "One pledging money" , "Godparent; financial supporter" , "One giving money in support of an event" .)