Though lacklustre, a keeper is impressed by cheeky dash across pitch (6)
I believe the answer is:
streak
'dash across pitch' is the definition.
'streak' can be an answer for 'dash' (I have seen 'Nude dash ' mean 'streak' so perhaps 'dash' could also mean 'streak'). I am not certain of the 'across pitch' bit.
'though lacklustre a keeper is impressed by cheeky' is the wordplay.
'STREAK' is hidden within the letters.
However, I am not sure how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for streak that I've seen before include "Long mark, run swiftly" , "Run unclothed" , "Run naked as stunt" , "Move very quickly" , "Run naughtily nude in public" .)