U.S. Open betting: Duval out for another upset on Day 4
Americans take center stage in Day 4 of the US Open. Serena Williams looks to continue her dominance in Flushing Meadows as she takes on Kazakhstan's Galina Voskoboeva.
Williams was impressive in her opening-round win, losing just one game. She should continue to have easy matches throughout the first week. Two other matches to keep an eye on during Day 4: John Isner (-275) vs. Gael Monfils (+200):
Perhaps the best match of the day on paper. Hard-hitting American John Isner takes on the magician Gael Monfils. When Monfils is on his game, he's as entertaining to watch as anybody with his fantastic athletic ability and shot making. These two players have met six times in the past with each winning three. This is a treat and a must watch for any tennis fan, especially so early in the tournament.Victoria Duval (+200) vs. Daniela Hantuchova (-275):
The 18-year-old American Victoria Duval won her first Grand Slam match beating former U.S. Open Champion Sam Stosur in the biggest upset of the tournament thus far. Hantuchova is a crafty veteran, but has only won two matches this summer. Can Duval's magic continue? An upset here is certainly possible with the crowd rallying behind the young American.JayPrimetown is an avid sports bettor with a strong interest in soccer, tennis, and MMA. Follow him on twitter @JayPrimetown.