Do you think he really has to "preserve" his body, or is it something else? I don't know. :dunno: I love Roddick more than anyone, but I have to wonder where his heart is sometimes. I think Wimbeldon still haunts him (damn you Feds!).
He is 28, getting old by mens tennis standards. With his knee in 2009, not to mention mono this year, its getting more important for him to allow for a decent amount of recovery time between matches.
Who else pulled out of the Davis Cup this year? Roger Federer. Its not like Switzerland couldnt use his help either -
http://worldradio.ch/wrs/news/wrsnews/kazakhstan-pound-switzerland-in-davis-cup.shtml?20907
At 29, he needs recovery time too, plus he has kids now which he would want to spend time with.
Look at the dates for some of these ties -
http://www.daviscup.com/results/
QF's are about a week after Wimbledon finishes, SF's less than a week after the US Open finishes. Maybe less important, but the Final would be a couple of weeks after the World Tour Finals, which he has qualified for 5 times. Being a perennial top 10 guy up until now, he would give himself a good chance of making them again.
Lets say he doesnt care about Davis Cup anymore. Even then, his résumé shows that he has been one of its most loyal participants in the American history of the event.
Maybe its time to say...