15-year-old Catherine `` Cici '' Bellis win her first ever grand slam match . Bellis defeats 12th seed Catherine `` Cici '' Bellis in the U.S. Open 12th round . The junior world I loved it . No . four was given a wildcard after winning the U.S. national championships . Bellis plays Kazakhstan 's Dominica Cibulkova in the 12th round .
15-year-old Catherine `` Cici '' Bellis win her first ever grand slam match . Bellis defeats 12th seed Catherine `` Cici '' Bellis in the U.S. Open 12th round . The junior world No . four was given a wildcard after winning the U.S. national championships . Bellis plays Kazakhstan 's Dominica Cibulkova in the 12th round .