Sale prop Stuart Turner will also join England on stand-by, replacing Bristol's Darren Compton who flew out as temporary cover in the immediate aftermath of skipper Phil Vickery's two-match ban for tripping USA centre Paul Emerick.

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Paul Callahan won the Olympic trails this past weekend and will represent the USA in the Paralympic Sonar class in the UK this upcoming summer.

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"We admire Paul for making this difficult decision, " said Steve Penny, president of USA Gymnastics.

BBC: Injured Hamm forced to withdraw