The most common and most likely answer to this crossword clue is the 5 letter word SCRUM
I've seen this crossword clue in Financial Times
S
C
R
U
M
More clues leading to the result SCRUM
- Romeo among undesirables in riotous struggle
- Problem claiming credit for means of restarting play
- Problem involving credit leading to melée
- Melee gets papers crumpled, somewhat
- Fight delicious? O my!
- Pack strong drinks, omitting pies
- Hooker’s part of this low life hanging around edge of road
- Feature of rugby seconds, being supported by clubs with spirit
- Forwards steal fruit, not quietly
- Locks feature in this river surrounded by slime
Buddy explains!

The straight part
We know that "Fight" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fight = scrum.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.
What does SCRUM mean?
SCRUM noun- A tightly-packed and disorderly crowd of people.
- Specifically used in the Canadian media to describe a tightly-packed group of reporters surrounding a member of the Canadian House of Commons while in the Parliament Buildings.
- In rugby union or rugby league, all the forwards joined together in an organised way. Also known as a scrummage.
- In Agile software development, a daily meeting in which each developer describes what they have been doing, what they plan to do next, and any impediments to progress.