Cross Grip Sumi-gaeshi

National level competitor and 2009 US Open 100kg Bronze medal winner Billy Worthington demonstrates this technique.

One hand grip to Osoto-Gari

One hand grip and pull your opponent down. As he resists and comes back up, step into an Osoto-gari/Osoto-makikomi. If he pushes against you the opposite direction, Sumi-gaeshi is a option.