The most common and most likely answer to this crossword clue is the 6 letter word SNICKS
S
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S
Buddy explains!

The straight part
We know that "gets edgy playing 9 25?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case gets edgy playing 9 25? = snicks.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 SNICKS mean?
SNICKS noun- A small deflection of the ball off the side of the bat; often carries to the wicketkeeper for a catch
- A small cut or mark.
- A knot or irregularity in yarn.
- A sharp clicking sound.