Another not used often option, but perfect for fighters that face a mirrored opponent like in an opposite stance;
Also because you have to be able to go both ways in saftey eventually anyway .
To go the way you want away from his rear hand on a double or treble jab man; check his 2nd or 3rd jab at the outside of the elbow point as you shuffle out towards the outside of that elbow ending with you landing your reply shot with your rear hand low and straight with both your feet on the same 45% angle heading out that same way that your going, this puts your shoulders square to his centre line for that instant so you have two hands that reach him and he has his one hand that can reach you ..but is covered at the elbow point for the whole move so your safe and you land your left hand under his left arm as a straight centre shot all in one movment as you go through,(hopefully as he is still comming in) ,controlling his arm at the elbow with your right glove the whole time so even though it feels like your opening up your left temple to him he cant touch it cause its on the outside of his glove.

Depending on his penetration or your chosen distance you can either step out there with your right leg firstly then correct the rear foot which brings power into your left arm as your rear hand lands into his gut, or you can step behind your right leg with your left to avoid the first jab ,control it, then take your right leg out and land as you shuffle the rear leg up on landing your left for a home run.
Timed with practice you can do the whole lot as one movment and its over in under a second and he is caught;your lead glove rides his elbow where ever it goes and your rear arm lands to where you feel the opening occur as you close or move in to that side.
Where you end up chokes people out of their distance and they have to go back or turn into you to reach you and you nail them.
That is not usually practiced so its rare to see it used, but think it out first it does add up to a great advantage even after your left straight shot you're still in the number one position and its his move.
He can only do two things ,one is suicide cause he turns into a waiting bomb.The other is he backs out and your on him the whole way two hand flying to his one.

Practice them with your partner first and you'll be in there with a new gun.

I know it sounds odd but ;(if you push even slightly onto the outside of a persons elbow it disolves their other arms power completley, even if its already been thrown and its on the way in!)
Try it out even with a mate standing slightly square in front of you ,you can stop his rear hand without touching it, then with the correct foowork taking you into safe ground to back up that knowledge you can open alot of new doors for reactive in fighting.