RR1 - USA def ITA 3-0

R1 - Serena Williams def Flavia Pennetta 0-6 6-3 6-0
R2 - John Isner def Fabio Fognini 7-5 5-7 7-6(4)
R3 - S.Williams/J.Isner def F.Pennetta/F.Fognini 6-2 2-6 11-9


RR2 - USA lt CAN 1-2

R1 - Serena Williams lt Eugenie Bouchard 2-6 1-6
R2 - John Isner lt Vasek Pospisil 3-6 6-7(4)
R3 - S.Williams/J.Isner def E.Bouchard/V.Pospisil 6-3 7-5


RR3 - USA def CZE 3-0

R1 - Serena Williams def Lucie Safarova 6-3 6-7(1) 7-6(6)
R2 - John Isner def Adam Pavlasek 7-6(4) 6-4
R3 - S.Williams/T.Kokkinakis def L.Safarova/A.Pavlasek 6-3 6-3



F - USA lt POL 1-2

R1 - Serena Williams lt Agnieszka Radwanska 4-6 7-6(3) 1-6
R2 - John Isner def Jerzy Janowicz 7-6(10) 6-4
R3 - S.Williams/J.Isner lt A.Radwanska/J.Janowicz 5-7 3-6