HAMILTON, New Zealand - CFL speedster Tevaughn Campbell scored his first try in the World Rugby Sevens Series, but there was little else to celebrate for Canada on Saturday.

The Canadian men, who stand 10th overall after three events, lost 28-14 to the seventh-ranked Americans, 19-14 to No. 9 Kenya and 22-14 to No. 11 Samoa. They will play No. 12 Wales in the Challenge Trophy quarterfinals next.

A rash of injuries at last weekend's stop in Sydney, Australia, opened up spots for Campbell, Josiah Morra and Luke Bradley on coach Damian McGrath's squad.

Campbell, a defensive back who has played for Calgary, Saskatchewan and Montreal the last three seasons, opened his scoring account against Samoa, speeding past Silao Nonu down the touchline to score under the posts.

The six-foot 195-pounder holds the CFL combine's 40-yard dash record of 4.355 seconds set in 2015. The Toronto native was Canadian university's 60-metre sprint champion in 2016 and the runner-up in '15 and '17.

South Africa, New Zealand, Fiji and Kenya topped their groups Saturday.

The world champion South Africans, host New Zealand and Olympic champion Fiji all finished with unblemished 3-0 records from pool play while Kenya topped the tight Pool D with two wins and a draw.

England, Australia and Samoa also secured quarterfinal places with two wins from three games while Scotland edged Argentina for the other place in the top eight.

New Zealand plays England, Fiji faces Samoa, Kenya takes on Australia and South Africa meets Scotland in Sunday's quarterfinals.

New Zealand needed a last-gasp try to Joe Ravouvou to snatch a 17-12 win over Argentina, semifinalists in Sydney last weekend, and to clinch top place in its pool. The win also cost Argentina a place in the Cup quarterfinals, sending Scotland through at its expense after Argentina's earlier shock loss to France.

New Zealand previously beat France 52-7 and Scotland 24-5 to stake its claim for the title in the first-ever World Series tournament played in Hamilton which took over from Wellington as host-city of the New Zealand leg.

South Africa was again the most impressive team in pool play, outscoring its rivals with 102 points as it beat Papua New Guinea 36-5, Russia 38-0 and England 28-7.

Fiji beat Wales 28-0, Spain 24-12 and Australia, winners of last weekend's Sydney tournament, 26-15.

Scotland secured its quarterfinal place with a 26-14 win over France, and Kenya scraped into the playoffs with a 19-19 draw against the United States after beating Canada 19-14 and Samoa by the same score.

England beat Russia 47-0 and Papua New Guinea 27-0 before falling to South Africa in the pool decider.

Australia failed to recapture the form it showed in front of its home fans last weekend, losing 26-15 to Fiji in the decisive match in its pool after beating Spain 21-5 and Wales 26-7.

— With files from The Associated Press

News from © The Canadian Press, 2018