Dull players must have finished in front (8)
I believe the answer is:
overcast
'dull' is the definition.
(as in dull weather)
'players must have finished in front' is the wordplay.
I cannot quite see how this works, but
'players' could be 'cast' (group of actors) and 'cast' is present in the answer.
'finished' could be 'over' (over can mean finished or ended) and 'over' is present in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for overcast that I've seen before include "(Of sky) cloudy, dull" , "The sky covered by dark clouds" , "Of sky, covered with cloud" , "Not very bright" , "less than fine" .)