速力相撲

Speed is the key to effective Sumou especially against a heavy and strong opponent.

When fighting a heavy opponent you must not let him get into his position and groove.

Therefore you must move super fast.

On day 3 of Kyuushuu Basho 2004 Iwakiyama fought Asashouryuu and lost. He couldn't blow the Yokodzuna away like he did the previous Basho.

The key reason for the completely different outcome of the Shoubu was that Asashouryuu was super fast.

"The Yokodzuna was very fast," was Iwakiyama's comment.

That describes the idea completely.