Instructions
Wait for the opponent to attempt a low takedown. This move has a distinct animation, where the opponent crouches slightly before lunging for the waist.
Tap the right analog stick down and facing your fighter's back as soon as the opponent hooks your fighter's legs. If your fighter is on the right, facing toward his opponent, this means you'll be pointing the right analog stick directly to the southeast. This sprawls your fighter, so now he'll be in control of the opponent in a kneeling position.
Perform a minor transition while in control by positioning the right analog stick at the 12, 9, 6, or 3 o'clock position, facing away from the opponent, then moving the stick a quarter turn towards the opponent to make the transition. This will put you in side control.