Heading for championship? (5)
I believe the answer is:
title
I believe this is a double definition.
'heading' is the first definition.
(I know that title is a type of heading)
'championship?' is the second definition.
(a championship is a sporting title)
'for' is the link.
(Other definitions for title that I've seen before include "Book's name" , "Deed showing legal right to a property" , "Form of address - name" , "Distinctive name" , "Rank < deed" .)