Formiga shows us another variation of passing the De La Riva guard. Make sure to check out week one and week two as these techniques all tie together. At :25 Formiga uses a technique to get an inside grip on his opponents knee. The sleeve grips are critical to most DLR sweeps, so learning how to win the grip fight before starting the pass is critical.
In this technique Formiga is actually looking for the first guard pass of the series, but his opponent streches the leg to prevent clearing the hook. Instead of bailing out of the pass, he switches strategies and comes around to the same side, pinning the stretched leg and same side arm before clearing the hook and finishing in mount.