In their Davis Cup debuts, Marcos Giron and Alex Michelsen each scored straight-sets singles wins to lift the USA to a 2-0 lead over Chinese Taipei. Photo credit: Atsushi Tomura/Getty for ITF. U.S.

The sound of more than 14,000 tennis fans cheering his name did not make Rotorua 9-year-old Grayson Verran nervous when he ...