In this clip we look at how Colin Oates used his Sumi gaeshi at the world’s biggest competitions.

At the 2011 Qingdao Grand Prix Oates uses a belt grip to score Yuko and win in Golden Score.

On his way to winning the bronze medal at the 2014 Samsun Grand Prix Oates grips deep over his opponent’s back, again taking the belt and Ippon is the result.

The first time he used the underhook variation of his Sumi gaeshi in international competition was in Amsterdam 2011.

It was again on display at the 2013 Rijeka Grand Prix, when Oates used it to help him win another bronze medal.

This is a great example of the amount of momentum Oates needed to spin his opponent onto his back.

After scoring Waza ari Oates transferred quickly into Ne waza and scored Ippon from the resulting hold-down.

One year later, and Oates was taking another medal thanks to the underhook Sumi gaeshi, this time in Samsun.

Once again, Oates transferring very quickly into groundwork, and securing the hold for Ippon.

In the preliminaries of the 2014 Baku Grand Slam, Oates reinforces the value of Sumi gaeshi as a quick transition technique into Newaza.

And in the final, it’s Sumi gaeshi again, but this time his reverse variation.

Oates not dominant with the sleeve grip, but so quick to exploit his opponent’s momentum.

A big moment for Oates as it’s this Waza ari that secures him his first and only Grand Slam gold medal.

Another major medal came for Oates at the 2013 Moscow Grand Slam, when he took a silver medal.

Here’s a great example of his Uchi mata – Sumi gaeshi combination in the quarter final.

It’s that quick transition between the two techniques that makes it a success.

In the 2016 Dusseldorf Grand Prix Oates comes up with a beautifully improvised counter attack to Kosoto gari.

Certainly not a traditional Sumi gaeshi, but what a great piece of judo, and it scores him Ippon.

And, finally to Tokyo 2014, where Oates uses Sumi gaeshi twice in the same contest… The first as a takedown into Osaekomi waza, which scores him a Yuko.

The second is a very unusual technique, where he combines the underhook and reverse variations of Sumi gaeshi.

Notice how Oates takes the underhook grip, but throws his opponent over his right shoulder. And this Waza ari is enough to win him the contest.