With Thursday’s rain delay and catching up on the first round today, the U.S. Open looks this way (barring more rain):

Saturday: 7 a.m. to 5 p.m., NBC (previous schedule had an 11 a.m. PDT start on Channel 4)
Sunday: 10:30 a.m. to 4:30 p.m., NBC (but could start earlier pending Saturday’s weather)