I'm sure many ex boxers will tell you many different things.IMO the jab is first and foremost the most effective,but the straight right (as already stated) thrown whilst moving to your left (opponents right) is a safer option than any punch thrown with your left hand.In theory you should be out of range of your opponents left (power) hand and should also neutralise his lead right.
Straight right This content is protected Left hook to the body This content is protected Left hook to the body, right to the head This content is protected Superman punch This content is protected
lead straight rights and hooks. I'm a southpaw and boxed for about 5 years when I was a kid and would get caught by these punches from guys both faster and slower than me. Timing will be everything for Hatton.