The board 3 game has taken a course that wasn't unexpected. Mikhailuk lined up on the a2 pawn after Kiewra played Kb1, then sac'd the exchange on c3 to get it. Now, Kiewra is making some noise around b7/b8 and we will see if Slava has a good estimate of the position.
Tangborn's game looks like something I have played. He has a little better pawn structure, but things have a kind of random appearance. Maybe Eric is thinking about playing to take the Bc8 and then attack the pawn on f5?
Sinanan I think has played a little too slowly. It looks like Black is going to put a toll both on d4 and I am not sure how White can react.
I have to say that playing the white side of the Reti is slow business, and Boskovic seems to like it. But, so does Serper.
In the SF - Carolina match it looked like Shankland and Bhat had switched boards as the fourth board was a French! Oh, Craig Jones was Black on board 4. Never mind. I was a bit surprised that Donaldson offered a draw, must be feel pretty clear about the others, but I don't know if either of the top two is ok for SF.