### Clue: Elbow possibly cut by stake not a sporting injury (7,6)
### Answer: JOGGER’S NIPPLE 
 ### Explanation: Definition: sporting injury
 JOGGER(what one might possibly call an elbow when used to give someone a nudge/jog) + SNIP(to cut with scissors or shears) + "pale"(a wooden stake or post that is part of a fence) **minus**(not) "a".
Defn: … caused by your top rubbing continuously against a projection of your top.