[Rusty Backhand]

The United States kept its spot in the top tier of the Davis Cup on Sunday when Andy Roddick rode his booming serve to defeat Olivier Rochus in five sets and give the Americans an unbeatable lead against Belgium in the playoff. Roddick won 6-7 (4), 7-6 (4), 7-6 (5), 4-6, 6-3 in 4 1/2 hours to put the U.S.

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