When breaking down the difference between Judo ne-waza (groundwork) and BJJ, I usually emphasise the 4 positions common with Judo and why 3 of them are almost not worth practicing for competitive Judo.
1. Guard – If someone closes you in their guard and is able to hold you up for 2-3 seconds most referees will call matte and stand fight up.
2. Turtle – If a player gives up his back and protects neck and arms it’ll usually take more then 5 seconds to expose a gap in his defence and therefore referee will probably call matte.
3. Side Control – If you find yourself in this position then you need to maintain it for 25 seconds to win by Ippon, trying to submit from here is an unnecessary risk to take.
4. Half Guard – My favourite. This position is usually allowed to run for longer as both player have options from here and it is quite easy for either one to look busy and thus justify a delay in the matte call.
I try and pass half guard to side control by working on my opponents far-side arm. By isolating that arm i can work on Ude-Garame or Ude-Gatame (for you BJJ’ers Kimura or Americana). If I’m having no luck there I try and feed my top hand under the opponents head and set up Sode-Guruma-Jime (cuff choke).
At any point in these attempts I look for the point where my opponent panics and puts all of their energy into defending the submission (some heavy breathing and groaning usually help sell this), I slide my foot out (you’d be surprised how easy this can be). By the time they get to relax having defended the sub I’ve usually slid my foot out and am waiting on the ref to call Osaekomi and 25 seconds later, Ippon.
Note: If I think any of the submissions are going to get a tap I can the pin idea and go hell for leather in search of that tap tap tap.