This is the essence of the technical sequence, in a nutshell. Like a classic toreando pass ("bullfighter"), you're more or less holding your opponent's legs in place while you skirt around them, avoiding his guard in much the same way as you'd avoid a charging bull.

However, with reverse De La Riva guard (or RDLR, for short), there is an additional complication you have to deal with: your trapped leg is hooked by your opponent's foot. Instead of simply kicking your leg back, as many toreando options often explore, where you're likely to lose your balance and still have your leg hooked, we're going to take a different, more subtle tactic.

Start by gripping your opponent's lapel, right at the bottom of the jacket. The idea here is threefold: first, you want to be sure you have a hand on their midsection for base. Second, you need to block their outside leg from getting involved (think: leg lasso). Finally, it's helpful to keep their hip pinned somewhat as you execute the following maneuvers.

Once your hands are in the right place, you need to put downward pressure on your opponent's hook. The easiest way to do this is with your trapped knee, by pushing inward. Once the hook pops off, now you're going to change the angle your knee points toward, turning downward and then, eventually, inward, guiding his or her foot to the inside the entire way. From here, you're almost completely past their guard, and knee on stomach is a logical progression.