I like to trick my opponents by using a classic tactic. Basically I hit them with soft shots and let them get used to feeling that. Then I smash them with a hard blow that wakes them up.

To be specific, I'll try only throwing straight punches using only 40% of my power, letting them get used to that power and straight angle. Then my favorite is to watch their face when I hit them with a 100% power left hook. The straight punches get their guard in front of their face, which opens them up for a very powerful left hook. If I stun them I follow up with a 100% straight right.

Play the fool to catch a fool, make them think you're a one dimensional fighter, and then let it all hang when they least expect it!