U.S. Open Day 4 TV Schedule

2nd Round Coverage, all day ESPN2 starting at 1 ET

Primetime at the U.S. Open, presented by IBM (7 ET)
Women's Singles 2nd Round: Jabeur/(20)Vandeweghe
Men's Singles 2nd Round: (1)Nadal/Daniel

U.S. Open Day 3 TV Schedule

1st and 2nd Round Coverage
on ESPN starting at 1 ET and then moves to ESPN2 at 6 ET

No point in specifying which are the two Ashe primetime matches since there will be primetime matches on every court as some courts have 5 or even 6 matches scheduled today, in order to catch up, leading to multiple night sessions.

U.S. Open Day 2 TV Schedule

1st Round Coverage, all day on ESPN starting at 1 ET

Primetime at the U.S. Open, presented by IBM, 7 ET
Women's Singles: Mertens/(15)Keys
Men's Singles: (3)Federer/Tiafoe

U.S. Open Day 1 TV Schedule

1st Round Coverage
Day session (1 ET, ESPN)

Primetime at the U.S. Open, presented by IBM (7 ET, ESPN2)
Match of the Day: Sharapova/(2)Halep
Men's Singles: King/(4)Zverev