That online coverage will carry the world TV feed until 6:30 a.m. ET, when it will begin simulcasting TNT's TV coverage. TNT, in its last year covering the event before ESPN picks up cable TV coverage next year, will carry 28 hours — including 12 hours both today and Saturday.

Besides TNT simulcasts online, viewers can also find views that won't air on TV, including close-up coverage focused on play at the ninth, 10th and 11th holes.

TNT's coverage largely will be produced by ESPN/ABC — with a few TNT announcers, such as Ernie Johnson joining an on-air team of mostly ESPN/ABC announcers — and then ABC picks up the bulk of weekend coverage, including Sunday's finish.

Tom Watson, who is playing the Open, is scheduled to be a weekend analyst on ABC. But the five-time British Open winner holds out hope he'll play well enough that he'll appear on-air swinging rather than analyzing: "I hope I'm not broadcasting on Saturday and Sunday very much, if at all."