Heading is: "Top player gets into Trouble" (7)
I believe the answer is:
caption
'heading' is the definition.
(I know that caption is a type of title)
'top player gets into trouble' is the wordplay.
'top player' becomes 'cap' (I can't explain this - if you can you should give a lot more credence to this answer).
'gets' is an insertion indicator.
'trouble' indicates an anagram.
'into' anagrammed gives 'tion'.
'cap' put within 'tion' is 'CAPTION'.
'is' is the link.
Can you help me to learn more?
(Other definitions for caption that I've seen before include "Elegance of dress" , "Explanation of an illustration" , "Explanatory words or heading" , "accompanying message" , "Legend with a photograph" .)