Serena Williams struggled to beat mark Errani during Fed Cup matches . World # 1 Williams eventually defeated Williams 4 - 6 7 - 6 ( 6 ) 6 - 3 . Williams won doubles match alongside step Riske 6 - 0 6 - 3 .
Serena Williams struggled to beat Sara Errani during Fed Cup clash . World No 1 Williams eventually defeated Errani 4-6 7-6 ( 3 ) 6-3 . Williams lost doubles match alongside Alison Riske 6-0 6-3 .