The first American man to reach a Grand Slam quarterfinal in five years will not be part of the U.S. team that will face Croatia in the Davis Cup quarterfinals this month Isner, Sock, not Querrey, on US Davis Cup team vs. Croatia The first American man to reach a Grand Slam quarterfinal in five years will not be part of the U.S. team that will face Croatia in the Davis Cup quarterfinals this month Check out this story on USATODAY.com: http://usat.ly/29f0ye9 WHITE PLAINS, N.Y. - The first American man to reach a Grand Slam quarterfinal in five years will not be part of the U.S. team that will face Croatia in the Davis Cup quarterfinals this month. Instead of Sam Querrey, who upset No.