You are playing in a tournament against a very high-rated opponent.  After a series of great points, the match is now 2-2 and you are down 9-6 in the final game.  With 4 more great points, you have gain the lead 10-9 MATCH POINT.  What should you do?
Should you play your biggest, wildest, fastest forehand possible?
Or, should you just push and block hoping not to make a mistake?
The answer is neither.  You should try your best to play the appropriate strategy on the appropriate ball.  You just won 4 consecutive points.  There is no reason for you to go extreme just because you have match point.
 
 
1. You should try to play a very low, deceptive serve to a good location based how your opponent has previously received your serve in the last 5 games.
2. You should try to attack when possible.
3. You should try to stay consistent when defending and focus on placement.
 
 
The answer is not 100% power or 100% defense.  The answer is to play the appropriate strategy on the appropriate ball.  Shot selection and consistency are the keys to winning close games!