The most common and most likely answer to this crossword clue is the 9 letter word OUTPLAYED
I've seen this crossword clue in The Daily Telegraph
O
U
T
P
L
A
Y
E
D
More clues leading to the result OUTPLAYED
Buddy explains!

The straight part
We know that "excelled in game" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case excelled in game = outplayed.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 OUTPLAYED mean?
OUTPLAYED verb- To excel or defeat in a game; to play better than.