NEW YORK - Incoming men's tennis freshman Noah Rubin fell in straight sets to Federico Delbonis in the first round of the US Open main draw on Tuesday.
The Argentine, ranked No. 66 in the world, took advantage of Rubin's mistakes throughout to win 6-4, 6-3, 6-0.
Delbonis advances to take on the winner of 26th-seeded Gilles Simon and Radu Albot.
Rubin and doubles teammate Stefan Kozlov will be competing against fellow Americans Jared Donaldson and Michael Russell later in the week.
Rubin clinched wild card entries into both main draws by winning both the singles and doubles titles at the USTA Boys' National Championship.
In doubles, Rubin and Kozlov's opponents have an 0-2 record playing together. Russell is a 36-year-old who has been a pro since 1998, while his teammate Donaldson is a 17-year-old in his first professional season.
The doubles winner will advance to take on either top-seeded Bob and Mike Bryan, or Max Mirnyi and Mikhail Youzhny.
Following the US Open, Rubin will return to Winston-Salem to prepare for the 2014-15 Wake Forest men's tennis season.