### Clue: After a contest, be confronted by sharp change (5-4)
### Answer: ABOUT-FACE 
 ### Explanation: Definition: sharp change
 [A + BOUT(a contest/a match, in wrestling or boxing)] **placed above**(After …,…, in a down clue) FACE(be confronted by/presented with, say, a problem).
Defn: …/turn in the opposite direction, in one's thinking.