Just four days after Luke Donald returned to World No. 1 and Memorial tournament organisers have added enormous spice to their event by grouping Donald with Rory McIloy, and the player relegated into the World No. 2 position.

However what BMW PGA Championship organisers resisted, officials in Columbus, Ohio have grabbed in grouping Donald and McIlroy, along with PGA Champion, Keegan Bradley, for the opening two rounds of the $US 6.2m event at Murfield Village.

Rory McIlroy thrown straight in the deep end at the Memorial and playing first two rounds in the company of now World No. 1 Luke Donald (Photo - Fran Caffrey/www.golffile.ie)

Donald successfully defended his Wentworth title winning by four strokes over the famed ‘Burarma Road’ course and he is teeing-up in the Ohio tournament for an eighth occasion, and with his best finish being sixth in 2008.

In constrast, the wheels fell off McIlroy’s cause for the Northern Irishman to miss the cut for a second event in succession.

So concerned is McIlroy with his poor form this season the 23-year old announced he has added next week’s FedEx St. Jude Classic to his schedule.

A week late he will defend his U.S. Open title at the Olympic Club in San Francisco.

Masters champion, Bubba Watson returns to competition at Muirfield and with organisers grouping the left-handed American with fellow lefty Phil Mickelson and Rickie Fowler.

Tiger Woods, a four time past champion (1999 – 2001 & 2009) will play the first two rounds in the company of double victorious USA Presidents Cup captain, Fred Couples and winning Royal Melbourne team mate, Bill Haas.

Woods has contested the event on 12 prior occasions but this year will be the first time since he finished 19th in 2010 he will tee-up in ‘Jack’s event’.