Once I establish good timing with my gyaku-zuki, I can add techniques like this one. It's very simple, yet effective if your opponent is expecting a body attack.

Every now and then I like to use kicks (although I have played conservatively at the past world championships). This is my favorite one. I will usually fake to the inside first before executing to the outside.

Both punches need to score on this combination, otherwise you are open to a counter attack from your opponent. This is a popular combination used by Japanese athletes. Since my style of fighting is similar to the Japanese, naturally we practice this technique a lot at our dojo. When throwing the first jodan gyaku-zuki, do not pull your other hand to your hip. This wastes time for the second punch. Instead, leave your hand in front of you so it can be quickly executed for the second attack.

This is actually my teammate, George Kotaka's favorite technique but I like it too. It's a great blitzing technique but requires good speed. Don't attack from too far or else you'll never catch your opponent. You should use the first gyaku-zuki as a feint and be scoring on your opponent by the second punch.