Prop Duncan Jones, lock Ian Evans and back-rower Gareth Delve were not considered due to injury.
His form this season has seen the South Africa-born back-rower win his first England Saxons' cap.
Wales had three Olympic gold medallists in cyclists Cooke and Geraint Thomas, plus rower Tom James.
The Londoners salvaged some respect with well-worked tries from second rower Haumono and full-back Luisi.
Other Teessiders honoured include Olympic rower Kat Copeland and Girl Guide leader Christine Jackson.
Gloucestershire rower Zac Purchase set the fastest time in the heats of the lightweight men's sculls.
BBC: SPORT | Other Sport... | Rowing | GB four power to opening victory
The medal represents Sir Chris's fifth gold, matching rower Sir Steve Redgrave's British record of Olympic titles.
Fellow front rower, Argentina international Juan Gomez, will also play in that game after a calf problem.
"2012 is a once-in-a-lifetime chance to change the habits of a nation, " said the 47-year-old former rower.
Australian rower Joshua Booth has been arrested after a shop front was damaged in a Surrey town.
Warriors second rower Hansen was held up on his back over the line in the early stages.
The flat-bottom boat balanced precariously just barely above water level, a skilled rower standing and pushing gondola-style from the back.
But the 6ft 9in second rower said he was not taking anything for granted ahead of Saturday's match.
BBC: SPORT | Rugby Union | English | Johnson focused on Europe
Scottish hopes for more success on Friday rest largely with rower Katherine Grainger.
Former Wales back-rower Emyr Lewis says that Jones' departure was to be expected.
Andrew Triggs-Hodge, 33, a rower raised in Hebden, North Yorkshire, was in Great Britain's gold-winning men's coxless fours crew.
Second-rower Jones-Buchanan believes he has the ideal opportunity to impress Smith and secure a long-term berth in the side.
London Irish scrum-half Alfredo Lalanne, Montpellier prop Juan Figallo and Universitario La Plata second rower Mariano Galarza drop out.
Beagles Bordeaux winger Rafael Carballo, Tucuman RC second rower Santiago Guzman and Dax scrum-half Nicolas Vergallo join the squad.
The Leeds-born front rower turns 30 this December and won't be around forever.
One player far more likely to be seen at The Rec next season is South African back rower Francois Louw.
The 30-year-old New Zealand-born front-rower has a reputation for powerful scrummaging courtesy of his hefty 19st 9lb, 6ft 1in frame.
The rower, from Lossiemouth, Moray, was greeted by large crowds when she was welcomed home in August following her success.
The 23-year-old flanker follows Saracens number eight Ben Skirving and Western Province back-rower Luke Watson in moving to the Rec.
As well as a top scientist and inventor, 18-year-old Jake is also a champion rower and House Leader at his college.
The South African-born back-rower qualified through residency for England last year and went on to play for the Saxons last season.
The short-throw six-speed manual gearbox continues to be a gear-rower's delight, though the clutch pedal throw could be a bit heavier.
"He came up to me and said, 'Have you got one of those buttons, mate, ' " said U.S. rower Paul Hoffman.
The side will be led by Melbourne back rower Jeremy Smith, who captained the side against Tonga in Auckland last month.
The jury heard a statement from four-time Olympic gold medal-winning rower Sir Matthew Pinsent, who was assistant umpire of the race.
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