U.S. Davis Cup captain Jim Courier has selected teenager Ryan Harrison to the four-man squad that will play Switzerland next month in the first round.
The 19-year-old Harrison joins Mardy Fish, John Isner and Mike Bryan on the team that will play on clay indoors in Fribourg, Switzerland, from Feb. 10-12.
Bob Bryan is missing the match because his wife is due to have a baby, so Courier says Fish and Mike Bryan are the likely doubles pairing, with Fish and Isner playing singles.
Andy Roddick had already decided not to play before he was injured during the Australian Open.
Switzerland's team is likely to be led by 16-time Grand Slam champion Roger Federer.