U.S. Open champion Justin Rose didn't take the week off directly after winning his first major championship at Merion. He took the next week off instead.
Rose pulled out of the AT&T National in suburban Maryland on Monday, citing exhaustion.
"I'm disappointed to withdraw from the AT&T National, but the last three weeks have been extremely demanding both mentally and physically," Rose said in a statement. "This tournament has been very good to me - especially in 2010 - and I would play if I felt I could. Tiger and his Foundation run a great tournament, and I wish I could be there."
Rose won this event in 2010, the first of two years the tournament was held at Aronimink C.C., near Philadelphia and his U.S. Open triumph, as Congressional C.C., site of the AT&T National, was preparing to host the 2011 U.S. Open.
The Englishman competed last week at the Travelers Championship, just outside of Hartford, Conn., where he finished T-13.
The AT&T National field is now missing two of its last three champions, with 2012 champion Tiger Woods pulling out, citing an elbow injury first suffered at The Players Championship and aggravated at the U.S. Open.