Backs Rob Vickerman and Tom Biggs are away on England Sevens duty in Hong Kong.
Another winger in the team is Rowan Varty, the captain of Hong Kong's rugby sevens team.
Wales opted out of international Sevens rugby as part of a series of cost-cutting measures.
His consistent showings have been rewarded with numerous call-ups to the England Sevens squad.
"The sevens will be a good run out for the back three boys, " he added.
Wales will also be sending a Sevens squad to compete in next year's Commonwealth Games in Melbourne.
The 27-year-old has played for Ireland at U21 level and has also represented the Ireland sevens side.
And the email announcement that a local pub was showing the Rugby Sevens live made my day.
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Wales then pipped Argentina 10-7 and overcame Portugal 17-5 to secure a showdown with Sevens aces Fiji.
Lee and his team also navigated a course which gained rugby sevens acceptance into the 2016 Games.
In addition to playing against London Welsh, Irish defend their Middlesex Sevens title at Twickenham on Saturday.
On Sunday they were squeezed out by sevens runs to Kenya, chasing a total of 243 for 9.
The Exiles feature England Sevens players Paul Sackey and Geoff Appleford, while Quins include exciting wing Ugo Monye.
Golf was passed by 63 votes to 27 while rugby sevens had 81 votes in favour and eight against.
The International Rugby Board would scrap its Sevens World Cup to ensure the Olympics is the sport's top event.
If their bet turns up sevens, let them roll in riches, and, if not, go bust without government help.
You know, give me all your sevens, tell us what you've done wrong.
And the team also features England Sevens players Matt Cox and Charlie Fellows.
Paul was full of praise for Lydon, who joined the coaching staff during the summer after coaching the Sevens team.
Wales will open their campaign against world sevens champions Australia at Surrey Sports Park on Friday, 20 August (1400 BST).
The sevens game is attractive to Americans with short attention spans and long-held views that scoring a lot is good.
The All Blacks rested sevens specialist Eric Rush but still managed to score eight tries with Sosene Anesi crossing twice.
Wales will also continue to compete in IRB Sevens tournaments, although their schedule for next season has not been confirmed.
Wales will sit out the next two tournaments of the Sevens series, in New Zealand and the USA in February.
"She had me close my eyes, put my head in my hands, and count backwards from 100 by sevens, " says Grove.
Everyone knows that in sevens anyone can beat anyone, but it was really surprising just how many times the underdog won.
Last season's IRB Sevens attracted more than 250, 000 spectators over the World Series and reached 136 countries through its television coverage.
Fielding an inexperienced side, the Springboks were no match for the All Blacks' professional sevens players and took a dismissive thumping.
They are led by Melissa Ruscoe, who has also captained the New Zealand women's football team and their rugby sevens side.
Maybe one year soon, we'll see a Laotian team at the Sevens.
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