Gray among four changes for England
England have made four changes to their squad for the Dubai leg of the HSBC Sevens World Series including a first appearance for Alex Gray.
Jeff Williams, Sam Edgerley and Marcus Watson have also been added to the 12-man party by head coach Simon Amor to complete the quartet of new faces.
Gray led an England Under-20 side that included Owen Farrell, Christian Wade, Mako Vunipola and Joe Launchbury to the final of the 2011 Junior World Championship.
The 22-year-old number eight left London Irish to sign a full-time England Sevens contract last summer.
"Competition has been fierce, which is exactly what you want as a coach to keep driving up standards," Amor said.
England face Canada, the USA and Fiji in Pool C on the opening day at a venue where they captured back-to-back titles in 2010 and 2011.
Squad: D Bibby, P Burgess, S Edgerley, M Ellery, A Gray, T Mitchell, D Norton, T Powell, J Rodwell, M Turner, M Watson, J Williams.