He was also a member of Great Britain and Ireland's winning 1999 Walker Cup team, where he was only the third player in 77 years to record four victories without a single defeat.

Casey joined the European Tour in May 2001, and recorded a second in his fifth event and a win in his eleventh, the Gleneagles Scottish PGA Championship.

After a disappointing second season he won the ANZ Championship and the Benson and Hedges International Open in 2003, and came sixth on the Order of Merit.

However he continues to play mainly in Europe, and was the leader of the European Tour Order of Merit in 2006, until Pádraig Harrington overtook him in the final event.

[4] In 2006, Casey won the HSBC World Match Play Championship at Wentworth, beating Shaun Micheel 10 and 8 in a record victory for the final.

Casey sparked controversy in November 2004, when in an interview for the Sunday Times newspaper he reportedly said, of the US Ryder Cup team, "Oh, we properly hate them.

Several leading American golfers, including Fred Funk and Davis Love III, publicly dismissed the controversy surrounding Casey as tabloid mischief.

[8] Casey won the 2012 Telus World Skins Game in Canada, having defeated Jhonattan Vegas in a tiebreaker during the event in July.

[9] In June 2013, Casey won his 12th European Tour title at The Irish Open to end a two-and-a-half-year winless drought, due to form and fitness problems.

[10] He captured the title with a final round 67 in changeable conditions, to win by three strokes over Joost Luiten and Robert Rock.

The victory was especially emotional and gratifying as Casey's wife Pollyanna had given birth to the couple's first child two weeks prior to the event.

In December 2015, Casey chose not to rejoin the European Tour for the following 2016 season, which made himself unavailable to qualify for the 2016 Ryder Cup.

[15] Casey admitted that he was hurt that he was not able to participate in the 2016 Ryder Cup, due to his decision then not to obtain European Tour member status, whilst others noted that England's most in-form golfer then, was remarkably absent from the premier golf team event.

[16] Casey rejoined the tour in late October 2017 with aspirations of making the European team for the 2018 match at Le Golf National.

[17] Casey remarked that he needed to play in another Ryder Cup, he missed the European Tour and being part of English golf.

[19] Casey scored two points out of a possible three and, ahead of the tournament, said he had 'no issues' speaking with 2010 Ryder Cup captain Colin Montgomerie, who infamously overlooked the then world No.

In September 2018, Casey was named as a captain's pick by Thomas Bjørn for the European team participating in the 2018 Ryder Cup.

The couple lived a quiet life on a remote ranch in rural Arizona, where keen amateur horse woman Jocelyn competed in local equestrian events.

[28] After they met at the Formula 1 Chequered Flag Ball at the 2011 Abu Dhabi Grand Prix, Casey started dating television presenter Pollyanna Woodward.

1Cancelled due to COVID-19 pandemic WD = Withdrew QF, R16, R32, R64 = Round in which player lost in match play NT = no tournament "T" = tied Note that the HSBC Champions did not become a WGC event until 2009.