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