In the second set , Shishkina again took a big lead .
Shishkina stumbled for the first time when serving for the match , double faulting at 5 - 2 , 30 - 40 .
In the second set , Shishkina again took a big lead , but she stumbled for the first time when serving for the match , double faulting at 5 - 2 , 30 - 40 .