Once Oates had the jacket tied up, he considered this as a winning position. If his partner tried to prevent the roll he had a couple of other variations of the technique that he could use in order to secure Osaekomi… His first variation was Sangaku.
The most common defence to the arm tie roll was for the partner to turn their hips away from Oates and to brace with their left leg.
In this case Oates tucks his right heel under their elbow, which adds leverage to the turn.
He then pulls up on the arm that’s tied off.
Using the whole of his bodyweight he leans on his partner’s head and rolls them over.
Here’s the upward motion on the arm, with the leg hooked in.
And here’s the roll… Finally, at the end, securing the Sangaku, by placing his left foot behind his right knee, and dropping his head to the tatami.