Here are my predictions for the women's quarterfinals at the US Open for 2015. Last year I correctly predicted 2 of 4 women's quarterfinals and correctly predicted 3 of 4 men's quarterfinals. This year I correctly predicted 2 of 4 women's quarterfinals and 3 of 4 men's quarterfinals.
Serena Williams (USA)  vs Roberta Vinci (ITA) . As I said before when I was predicting the women's quarterfinals, this semifinal was going to be irrelevant. The more interesting topic to discuss is the fact that for the second time in this tournament, Serena lost a set. The fact that it was against her sister Venus is not surprising, and to be sure, it never really looked like the defending champion was in danger of losing this match. Vinci did well to win a match I did not expect her to win by gutting out a 3-set win over Kiki Mladenovic. However, as an Italian journalist admitted in a press conference today, "Even in Italy we think [Vinci] has no chance." Despite the fact that she has never lost a set in 4 meetings to Vinci, Serena refuses to take anything for granted and said "She's in the semifinals for a reason." Amazingly, Vinci is one of three different Italian women to be in the semifinals of the U.S. Open in the last four years (Sara Errani in 2012, Pennetta in 2013, Vinci and Pennetta in 2015). Things did not work out too well for the Italians before and I doubt it will this year. PREDICTION: Williams.