Pointedly, might a competitor chuck it? (7)
I believe the answer is:
javelin
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for javelin that I've seen before include "Spear for field event" , "Spear for throwing" , "Long spear" , "Field event projectile" , "Sporting spear" .)