Predicted Winners in BOLD
ARTHUR ASHE STADIUM (11 a.m.)
[1] Rafael Nadal (ESP) vs Alexandr Dolgopolov (UKR) – Rafa has looked a bit vulnerable, but it is hard for me to see Dolgopolov winning 3 sets in this match.
[3] Roger Federer (SUI) vs [33] Philipp Kohlschreiber (GER) (7 p.m.) – Did Federer win on Saturday due to Lopez not having a great return of serve or did he win because he is playing better than he did in rounds 1 and 2? We will find out today.
LOUIS ARMSTRONG STADIUM
[9] David Goffin (BEL) vs Andrey Rublev (RUS) (not before noon) – Goffin has to love his draw, but Rublev is playing well.
GRANDSTAND
[6] Dominic Thiem (AUT) vs [24] Juan Martin del Potro (ARG) – What a match! I think JMDP may be in Rio 2016 mode.
La casaca de #LaTorreCósmica promete un tenis estelar…
¿Hasta dónde podrá llegar?
Comienza 2R, ahora, para JMDP.
¡#VamosDelpo! 💪 pic.twitter.com/9d3REVTwSW— El tenista quemado (@tenista_quemado) August 31, 2017
Tennis Abides: Dan Martin on Tennis and Life 
The crowd truly helped Del Potro survive. I was impressed with his ability to play a 5 set match when he was obviously under the weather.