Querrey and Isner Give USA a 2-0 Lead Over Serbia in Davis Cup World Group First Round (February 2, 2018) Sam Querrey and John Isner gave the U.S. to a 2-0 lead over Serbia in a Davis Cup World Group First Round tie in Nis, Serbia on Friday. Querrey defeated Laslo Djere, 6-7(4), 6-2, 7-5, 6-4, and Isner outlasted Dusan Lajovic in five sets, 6-4, 6-7(7), 6-3, 3-6, … [Read more...] about Querrey and Isner Give USA a 2-0 Lead Over Serbia in Davis Cup World Group First Round