John Isner, Sloane Stephens give U.S. winning start at Hopman CupIn other first-round matches, Yvonne Meusburger beat seventh-seeded Mona Barthel 6-4, 6-3 and fifth-seeded Jamie Hampton beat wild-card entry Tamira PaszekSI Staff|Share on FacebookShare on XAdd us as a preferred sourceJohn Isner, Sloane Stephens give U.S. winning start at Hopman Cup In other first-round matches, Yvonne Meusburger beat seventh-seeded Mona Barthel 6-4, 6-3 and fifth-seeded Jamie Hampton beat wild-card entry Tamira Paszek 1-6, 6-0, 6-3. Add us as a preferred source on GoogleFollowLoading recommendations... Please wait while we load personalized content recommendationsPublished Dec 30, 2013 | Modified Dec 30, 2013SI STAFFShare on FacebookShare on XHome/Tennis