Utility back David Doherty has signed for Wasps on a three-year contract.
Doherty was released by Leeds after they were relegated
The 19-year-old played both union and league rugby for Leeds before plumping for the 15-man code in January 2004.
He made 14 appearances for the Tykes last season and also represented England Under-19s in the 2006 Six Nations and the IRB World Championship.
Wasps also confirmed that 26-year-old centre Rob Hoadley, who was banned for three weeks last season for stamping, has signed a new two-year deal.
Doherty was one of 13 players to be released by Leeds after they were relegated at the end of last season.
He became the youngest player to appear in the English Premiership when he made his Tykes debut as a 17-year-old against Northampton in May 2004.
The Leeds-born teenager admitted that working under rugby league legend Shaun Edwards was a major reason for joining Wasps.
"I just thought that in the next level of my development going towards my aims, Wasps would be the best place where I could fulfill my potential," said Doherty, who can play at full-back, outside centre or wing.
"The prospect of being coached by somebody like Shaun Edwards is brilliant for me. I'd say my main focus, after speaking to him, is to play at full-back, hopefully for England if I can develop in the years to come."