Thanks for the responses everyone.
And esila, the knee was touching the mat already..but I would love to hear how to rotate out in the other positions as well.
Thanks!
Aw man, when that knee hits the ground (if you have their right leg trapped, they're passing to your right, so their knee is down by your right hip on the mat), and if they have that far side underhook (under your left arm), the percentages are very high in their favor - you're nearly toast, my friend I'll offer some suggestions of what you can attempt, however it's best not to get there in the first place:
1. wrestleben's response of the darce counter to the knee slide pass is a good last minute resort "surprise" tech - I've managed this in the past but it gets harder to pull of once your partner is aware of what you're attempting.
2. You can attempt to regain some semblance of half guard by applying downward, curling pressure with your left leg on the back of his right ankle, using your right knee to hit his right knee from the inside, and attempt to scoot your hips / wedge your body underneath the knee. The trick here is that you won't fully rotate his knee out in prime deep half guard - you're just trying to get his knee off the ground and hopefully brace it back either on your belly button or, best case scenario, back into your full half guard. Take a look at this vid:
The tech starts around 5:07. Notice the position of the bottom player's right arm and how he uses it as a brace to keep that knee just off the mat. This is what you're aiming to recover if that knee goes to the ground. From there, you can apply the full technique in the video, or attempt to recover regular half guard or work on deep half guard entries.
3. Same as suggestion #2 in that you attempt to get his knee / shin back onto your belly, however this time FIGHT FOR YOUR UNDERHOOK. If you can pummel your left underhook in and he attempts to pass, get on your right side and you can then use your left knee to bump / knee him in the butt as he attempts to pass. This should send him "flying" by, and give you the chance to scramble / get his back / etc. This is why keeping that underhook is so important for both the bottom player and the passer.
As far as how to rotate the knee out, take a look at the half guard stickie - near the beginning Aesopian has a whole slew of deep half guard entries which are invaluable - the principles he suggests, especially the rocking motions, are the core of how you will be able to turn your opponent's knee this way and that when attempting any deep half entries. Hope this helps!
I think the best option - the one I use - is in Saulo's book. My game is 90% half guard.
Let's assume that you are on your right hip.
1. Use your left shin to slow the guy's pass by bringing it between you and him.
2. Use your left hand to block his left (far) shoulder. You'll probably be reaching under his neck to get there.
3. Pushing off with your knee/shin block, pivot your body away from the passer. In doing this, you are going to go completely on your right side, maybe even a little more toward face-down depending on how far he's gotten in passing your half guard with the knee cross.
4. From here there are a couple of things you can do. But at this point, it is very hard for the guy to pass your guard. I like to grab the guy's right sleeve or wrist and then turn back towards him, using my left knee and grip to control his ability to move any further in the direction of the pass. Depending on how much momentum or how hard he was pressing forward, you can use the spider guard low pass sweep to get back to the top.
Another simple trick I use is to reach under and grab the skirt of the gi in front with my right hand and pass it through his legs behind him to my left hand. If he keeps going forward, he will either be swept or get his back taken. I've stopped a lot of knee cross passes - even from black belts who otherwise smash me - with this technique alone.
Good luck!
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w0G - yes, the "knee shield" that Saulo refers to is also gold and I can attest to how annoying it is for me to attempt the knee slide, only to run into their damn knee shield (have to transition to the leg lace / weaver pass from there), especially if they're flexible sons of bitches.
ro1em0de1 - those galvao vids show just how important it is to get that underhook whenever you can.
Some additional options for when the top guy goes for the knee slide:
1) If it's early and he's just started popping his leg up (before the slide), you can easily transition to deep half-guard.
2) If he's half-way through the slide, you can scissor your legs (bumping him forward), go to your knees and attempt to take his back or take him down.
3) If the knee isn't all the way down yet, you have some nifty reverse De la Riva guard options. My favorite one is where you use the reverse De la Riva hook to bump the guy up and forward a little (creating space). You then can gain a bicep hook on his previously underhooking arm and nail some easy sweeps depending upon where his weight is.
4) If all else fails, I place my hands against his knee. I rotate my hips and push his knee across my body to the other side. His knee usually winds up on the ground on the other side. From here, you can: a) transition to deep half, b) a bridge sweep (look at Half-guard sticky or Vince's "Lost Techniques of the Half-Guard" dvd for Vince's bridge sweep sequences), or c) a back roll sweep (the guy usually tries to consolidate the new position by shifting his weight forward and working for the cross-face and this is a prime opportunity to take advantage of the weight shift).
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the lockdown always works for me. I know when someone uses it on me it's very annoying for me to get out of so i started using it myself
This is what I refer to as "the dark side" ... hate the lockdown.
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This is another viable option, however I personally feel the lockdown loses its effectiveness (along with any other half guard options) once your opponent's knee gets to your belly button or his knee gets to the mat (pretty much almost done with the knee cut pass), which is what I believe the TS was referring to.
At that point it is a good oppurtunity to hit your side and work for butterfly hooks, and then sit up. This is if they are still passing, not already passed into a dominant side control.
I'll offer some suggestions of what you can attempt, however it's best not to get there in the first place:
