The most common and most likely answer to this crossword clue is the 7 letter word NETBALL
I've seen this crossword clue in The Guardian
N
E
T
B
A
L
L
More clues leading to the result NETBALL
- Everyone following remarkably bent game
- Game girl carrying new bat
- Sport drag, perhaps, at society dance
- Following Nureyev’s primacy, ballet dancing is an activity no longer associated solely with girls
- Game PM’s address brought round party
- Final gathering for dancing and sport
- Sport to be announced in ring, first off
- Dance follows final game
- Rising number having great time in a sport
- National ballet dancing for sport
Buddy explains!

The straight part
We know that "a sport" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a sport = netball.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 NETBALL mean?
NETBALL noun- A (usually women's) team sport derived from basketball, with seven players on each side who attempt to score goals by passing a ball and throwing it into the opponent's goal, which is a raised hoop with a net at one end of the playing area. Unlike basketball, a player in possession of the ball cannot move until the ball is passed to another player.
- The ball used in this sport.