Two Cal ruggers contributed a total of six tries -- half the US goal production -- in the closeout of the International Rugby Board  Sevens World Series in Edinburgh this weekend.

Winger Colin Hawley touched down four times in three matches against Scotland, Fiji and Portugal while prop Blaine Scully crossed the tryline twice against Scotland and Kenya.

Despite the efforts of the Bear contigent, the USA side took no hardware home from the match and finished the series in tenth place ahead of Canada and Scotland.

Samoa claimed its first sevens World Series title on points with a 15-12 seminfinal win over England, then went on to win the tournament cup over Australia 41-14.

The weekend got off to a rough start for the Americans who went 0-for-3 on Saturday.

In the day's first match, the US took an early lead over Wales, but in the second half a combination of vigorous attacks and stout defense pulled the Welsh side ahead. Scoreless in the second frame, the Yanks saw the  scoreline move against them 10-19 at the end.

Next, the Americans squared off against host Scotland. Blaine Scully broke through for the match's first try before the Scots evened things up. Colin Hawley then took the US into the interval with a lead after his own touchdown. 

The second half was again a bedevilment as the American side was stopped cold and finally succumbed to the Scots 33-12 in full time.

In the final match of the day, Scully answered the Fijians opening try to tie the game, but was silenced thereafter. In the end, Fiji won 24-12. 

The three-match string of losses put the Yanks up against Portugal for the bowl quarterfinals on Sunday.

Thanks to two tries contributed by Scully, the Portuguese were defeated 26-21, setting the stage for a semifinal meeting with the Kenyans.

This time out, it was Colin Hawley who contributed to the US scoreline with his second try of the weekend. The match was ultimately forced into overtime which quickly ended when the Kenyans scored the go-ahead try.

By the end of tournament, Samoa took the cup, Scotland the plate, Wales the bowl and Russia the shield.

Hawley and Scully will return to the Cal line-up for the collegiate sevens tournament next weekend in Columbus, Ohio.

Cal's opponents in pool play will be Harvard, Notre Dame and Dartmouth. The Cal-Dartmouth match is scheduled to be broadcast by NBC at 2 pm (Pacific) on Saturday, June 5.

Quarterfinal, semifinal and championship matches will be broadcast on Sunday, June 6.

NBC Sports will cover the tournament live from 1 pm to 3 pm (Pacific) June 5-6 while Universal Sports will provide live coverage from 2 pm to  4 pm (Pacific).