The most common and most likely answer to this crossword clue is the 6 plus 7 plus 1 letter word TENNIS STROKE} –
T
E
N
N
I
S
S
T
R
O
K
E
}
â
€
“
Buddy explains!
The straight part
We know that "game play" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case game play = tennis stroke} –.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.