England's progress through the group phase gathered momentum as they overpowered the United States 45-7 in a match marred by a savage challenge on Owen Farrell that produced the first red card of the tournament.
Farrell, a second-half replacement at the Kobe Misaki Stadium, was attempting to pick the ball up off the ground in the 70th minute when he was struck by a shoulder-led charge by flanker John Quill that caught him on the jaw.
The England captain crashed to the floor but was quickly back on his feet as a brawl erupted with Mark Wilson leading the shoving before being joined by a large group of his outraged team-mates.