Couldn't pick just one match to highlight for day 1, so how about two choices.
Ryan Harrison vs. Marin Cilic
and
Grigor Dimitrov vs. Gael Monfils
If you are on the U.S. Open grounds tomorrow, you can't go wrong with either of these matches.
Harrison and Cilic will be playing on Louis Armstrong Stadium at 11:00. Harrison, the young American has had a productive summer. Harrison is up to #66 on the ATP computer and he could even be higher if a few points would've gone his direction in L.A. Cilic has kind of hit a plateau with his game and his ranking. He has big-time talent and should play well on hard courts.
I like Harrison getting the New York crowd behind him and fighting hard to a 4-set victory.
At 5pm on Louis Armstrong, another rising young player, Grigor Dimitrov will take on the popular French player Gael Monfils. Monfils wil be airborne for some shots, sliding for others, and running down every shot. Dimitrov reminds many of a young Roger Federer, but needs work on his backhand. I like Monfils in 4 entertaining sets.
Ryan Harrison
Grigor Dimitrov