### Clue: Defensive error gets cry of pain, followed by a long analysis (3,4)
### Answer: OWN GOAL 
 ### Explanation: Definition: Defensive error
 OW!(a cry when feeling pain) **plus**(followed by) **anagram of**(… analysis) A LONG.
Defn: …, say, by a football team in a match.
… "What have I done?"