Published: Sep 28, 2011 3:45 PM EDT
Updated: Sep 29, 2011 6:30 AM EDT

ST. ANDREWS, Scotland (AP) - Darren Clarke says he is struggling stay motivated after achieving his lifetime ambition of capturing the British Open.

Clarke claimed an emotional victory at Royal St. George's in July, winning his home major in the 20th attempt.

Since the win, the 43-year-old Northern Irishman has missed the cut twice, finished tied for 68th at the Bridgestone Invitational and tied for 35th at the European Masters.

Clarke said Wednesday that being appointed Ryder Cup captain is the biggest challenge left in his career.

This week, he's in the field at the Dunhill Links Championship in Scotland along with U.S. Open champion Rory McIlroy and Masters champion Charl Schwartzel.