Donald, from England, is a Northwestern alum and has played almost exclusively on the PGA Tour since turning professional in 2001.
To qualify for the European side a player needs to play in a minimum 11 Euro Tour events. The four majors and three of the World Golf Championships count as European tour events, but Donald did not play in either of the year's first two majors and also missed out of the Accenture Match Play Championship in February.
Donald, who won the 2002 Souhtern Farm Bureau Classic and has three top-10s in 2004, has joined Jesper Parnevik in pulling double duty on both tours. He currently is 33rd on the money list and is ranked 73rd in the world follwing the U.S. Open.
'When I look at the big picture, top 50 in the world is the number,' Donald said. 'And if I'm not in the top 50, I'm not good enough to be playing in the Ryder Cup, anyway.'
Ryder Cup captain Bernhard Langer has been in touch with both players over the course of the last several months, trying to persuade the two to try an get in the minimum number of tournaments.
Donald will be reinstated with the 59.54 points he had earned before resigning from the tour, placing him 21st on the European list. He was able to rejoin the Euro Tour based on his finishing in the top 115 of last year's Volvo Order of Merit, thus being eligible under that category.
The 35th Ryder Cup Matches will be held at Oakland Hills Country Club in Bloomfield Hills, Michigan, from 17-19 September, 2004.