England, winner of the last round of the series in Vancouver, was also impressive in crushing South Korea 52-0 in Pool A. Oliver Lindsay-Hague and Charlton Kerr bagged two tries apiece but they were outshone by Dan Norton, whose try lifted his career tally to 245, overtaking Kenya's Collins Injera as the all-time leading try-scorer in the world series.
Injera did not add to his tally of 244 as Kenya surprisingly lost to Canada in Pool B.
Kenya looked to have earned a late draw when Nelson Oyoo scored under the crossbar with less than a minute to go to tie the score at 14-14, but ill-discipline let them down as Canada stole the win 17-14 with a penalty from Nathan Hirayama after the siren.
World series leader South Africa defeated France 17-10 in Pool B, Australia edged Samoa 22-19 in Pool A, Argentina beat Scotland 22-14 in Pool D, and the United States beat Russia 14-7 in Pool D with speedster Perry Baker notching his 25th try of the season.
The remaining pool matches are on Saturday, with the knockout games on Sunday.