Run out of kit at a sporting event, perhaps (6)
I believe the answer is:
streak
'run' is the definition.
(streaking is a kind of running)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for streak that I've seen before include "Appear in the nude" , "Unbroken series of events" , "Run without clothes" , "act that may offend some spectators?" , "Move very quickly" .)