US Open Lookahead: Serena's Grand Slam bid resumes vs. Vinci
![US Open Lookahead: Serena's Grand Slam bid resumes vs. Vinci](http://images.worldnow.com/AP/images/8765742_G.jpg)
Let everyone else go ahead and assume Serena Williams will beat Roberta Vinci of Italy in the U.S. Open semifinals.
Let everyone else go ahead and assume Serena Williams will beat Roberta Vinci of Italy in the U.S. Open semifinals.