Re: If you Have Been In The Us Open Before Please AWNSER...
Those aren't really on the baseline. "baseline" seats are perpendicular to the baseline.
Are these day or night tickets? If they're day session, I'd encourage you to get there early and get a nice first come first serve seat in Armstrong. I only watch tennis on Ashe if I'm really really really into the player who's playing, since I never buy expensive tickets.
I highly encourage flirting with ticket checkers.