The Englishman has bounced back superbly after a 2005 season marred by self-doubt and a disintegrating game.
Ryder Cup caps: 1 (2004 winners)
Record: W1, L1
Position qualified: 6th
World ranking: 17
The 29-year-old is in contention to win the European Order of Merit this season after struggling in the wake of his anti-American comments of 2004.
Casey was making a tongue-in-cheek reference to Ryder Cup motivation but the angry response saw his game suffer.
He didn't make a cut from April to August 2005 but is flying high after becoming World Match Play champion.
His comprehensive 10&8 win over Shaun Micheel took him to a career high 17th in the world rankings and gave him a huge confidence boost ahead of his second Ryder Cup.
"I became paralysed over the ball and was beating myself up on the course," said Casey, who rose to prominence as a star US college golfer in Arizona, breaking several records held by Tiger Woods.
"It wasn't fun for a while - it can't be when you don't know where the ball's going to go."
With help from coach Peter Kostis, Casey has won three times in Europe this year, taking his career tally to seven titles, and is leading the Order of Merit.
Casey made his Ryder Cup debut in 2004 and, with David Howell, contributed a vital point against Jim Furyk and Chad Campbell when America appeared to be fighting back in the Saturday morning fourballs.
The Surrey star, who is capable of bursts of low scoring, then volunteered to lead Europe in the singles but went down 3&2 to world number one Tiger Woods.
The 2001 European Rookie of the Year played in Great Britain and Ireland's victorious Walker Cup side in 1999 and has appeared in three Seve Trophy matches.
Did you know? In US College days, Paul Casey broke Tiger Woods' scoring record in winning the prestigious 2000 Pac-10 Championship and bettered Phil Mickelson's scoring record at Arizona State University.