Angelique Kerber piles pressure on Serena Williams with emphatic win over Roberta Vinci

EVEN the mightiest of the mighty can be vulnerable and as Serena Williams prepares for her quarter-final today against Simona Halep, she knows she is being hunted down.

from Daily Express :: Tennis Feed http://www.express.co.uk/sport/tennis/707873/US-Open-Angelique-Kerber-Serena-Williams-Sport-News-Roberta-Vinci
via Express