Hikaru Nakamura and Wesley So are scheduled to play tomorrow, in round 4, and for most of the round it looked like they'd face each other with perfect scores on the line. Instead, the U.S. Championship is now without any perfect scores as Wesley So lost what had been a winning position against Sam Sevian while Hikaru Nakamura let Gata Kamsky escape with a draw.
Nakamura is still tied for first place, but now with Ray Robson. Robson defeated Conrad Holt to reach 2.5 points, and joined Sevian as the day's only winners. Alexander Onischuk should have been a third winner, but a moment of carelessness allowed Kayden Troff to escape with a draw. (Akobian - Gareev and Naroditsky - Shankland were also drawn.)
Being the top seed didn't do much for Irina Krush in the women's championship either, as she was mauled by Paikidze. Krush has 1.5/3, a point behind Rusudan Goletiani and Katerina Nemcova.