• Born May 4, 1989, in Holywood, Northern Ireland.

• Stands 5' 10 and weighs 160 lbs.

• Is a fan of Manchester United.

• Played on Europe's winning Junior Ryder Cup team in 2004.

• Turned pro at age 17 in 2007.

• Became the youngest player ever to be in the top 50 players in the world, in November 2008.

• Won his first professional tournament in February 2009: the Dubai Desert Classic.

• Is sponsored by Titleist and uses the company's bags, clubs, and balls.

• Finished 20th in the 2009 Masters Tournament, and had the third highest average drive among golfers making the cut.

• Won the PGA's Quail Hollow Championship in April 2010, beating Phil Mickelson by four shots on the strength of a course-record 62 on the final day.

• Took a four-stroke lead into the final round of the 2011 Masters but his game fell apart, capped by a triple-bogey on the 10th hole. His 80-shot round is the worst final round in history for anyone who led the Masters going into the final day. McIlroy finished tied for 15th place.

• Set the record for lowest score at any point during a U.S. Open tournament, at 13 under par, yesterday when he birdied the 17th hole.

• Set the record for lowest score at the U.S. Open after 36 holes, at 11 under par.