The super featherweight division is arguably the hottest in Britain at the present time.
BBC: Fehintola (right) faces Johanneson in Barnsley (Mr Will)
Once perfected, the silk will be used for featherweight ballistic vests, medical sutures and artificial ligaments.
Hamed, who was world champion at featherweight, is looking forward to working with Johnson.
The Coatbridge super-featherweight will fight WBO champion Roman Martinez in Glasgow's Kelvin Hall on 4 September.
One-time IBF super-featherweight title holder St Clair, 32, has never been stopped in his 46-fight career.
All four fighters, plus featherweight Iain Weaver, will box for final places on Friday.
Arthur weighed in bang on the 130lb super-featherweight limit, Cook was half a pound under.
There was also a win at York Hall for Manchester super featherweight John Murray.
"I was killing myself to make featherweight, so I'll be much stronger against Arthur, " he said.
Espadas landed the cleaner punches to win on two of the three scorecards in the featherweight fight.
The Commonwealth super featherweight champion is out to emulate Watt, who won the world and European titles.
Lovers of literature had already adopted Cybook Opus' dimensions, ergonomics, featherweight 150 grams and extensive battery life.
ENGADGET: Bookeen's upgraded, colorful Cybook Opus to debut on May 7
Edinburgh's Arthur, 30, will make the first defence of his WBO super-featherweight crown at the MEN Arena.
Khan will fight on the same bill as Alex Arthur's WBO super-featherweight defence against Dagenham's Nicky Cook.
On the undercard, Stephen Smith won the Commonwealth featherweight belt with a split decision over John Simpson.
Under the Hood: 240 hp weighing in at 3, 900 lbs a featherweight compared to the hefty Range Rover.
He made history in 1984 when he beat Wilfredo Gomez to be crowned the World Boxing Council Featherweight champion.
He was known as the Pocket Hercules, and lifted in the featherweight division.
British and Commonwealth featherweight champion Scott Harrison retained his titles with a third round stoppage of Steve Robinson in Glasgow.
Winstone turned professional in 1960 and two years later claimed the British featherweight title from the highly rated Terry Spinks.
Cook is making his second world title tilt after last summer's unsuccessful bid to dethrone WBO featherweight champion Steve Luevano.
Burns, 27, will challenge undefeated Puerto Rican Roman Martinez for the WBO World super-featherweight crown on 4 September in Glasgow.
Cook was due to challenge Harrison for the WBO featherweight title but the Scot pulled out at 48 hours' notice.
Boxing promoter and former world featherweight champion, Barry McGuigan, was among those supporting the charity, which helps people with brain injuries.
The bike's not-so-featherweight inventor takes it for a spin after the break.
ENGADGET: Cardboard bicycle 'close to mass production': tough, green and just $20
Then we've got a lawyer from New York - very intelligent and well-educated again - and she's a world champion at featherweight.
Nelson is also training Commonwealth featherweight champion John Simpson, who defends his title against Stephen Smith as main supporting contest on the show.
Fighting further down the card, Liverpool's Derry Matthews produced a sizzling performance to dethrone Salford featherweight Steve Foster and claim the WBU title.
The 28-year-old will challenge Arthur for his WBO super-featherweight crown on 6 September and is determined to finally realise his world title dream.
Also on the bill at what used to be the Millennium Dome in Greenwich is Nicky Cook's WBO featherweight clash with American Steve Luevano.
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