The most common and most likely answer to this crossword clue is the 4 plus 3 letter word PLAY OFF
I've seen this crossword clue in The Daily Telegraph
P
L
A
Y
O
F
F
More clues leading to the result PLAY OFF
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
Crossword Answer definitions
PLAY OFF noun- A final game in a series needed to break a tie.
- A short series of games to select a league champion.