Regardless of who is still ahead of her ( Serena and Simona ) , Gabi is not intimidated .
Making the switch to coach Sam Sumyk , who was with Victoria Azarenka when she rose to world # 1 , has been a boon for Muguruza .
Regardless of who is still ahead of Muguruza 's ( Serena and Simona ) , Gabi is not intimidated .
Making the switch to coach Sam Sumyk , who was with Victoria Azarenka when she rose to world # 1 , has been a boon for Muguruza .