Red baskets replace flags at each hole. It’s a Merion thing. (Charlie Riedel / AP)

Update: The rain delay means that the tee time for the Tiger Woods-RoryMcIlroy-Adam Scott group has been pushed back to 4:48 p.m. EDT.

Watching the U.S. Open is going to be a particularly tricky enterprise today, with strong storms threatening the first day of play at Merion Golf Club just outside Philadelphia.

The first groups of golfers, which includes Phil Mickelson, Matt Kuchar and Brandt Snedeker, have begun to play with storms forecast to blow through later this morning and this afternoon, when the marquee group of Tiger Woods, Rory McIlroy and Adam Scott are playing (with their 1:14 p.m. EDT tee time pushed to 4:48 p.m.).

Steve Stricker and Phil Mickelson get ready. (Rob Carr / Getty Images) Steve Stricker and Phil Mickelson get ready. (Rob Carr / Getty Images)

Here’s how to watch to the Open: ESPN has live coverage from 9 until 3 p.m. EDT. NBC picks up coverage from 3 until 5 p.m. with coverage returning to ESPN from 5 until 7 p.m. DirecTV viewers can find multiple channels of live coverage, starting at 9 a.m. (starting at Channel 701). Those channels will carry the play of two featured groups, starting at 9 a.m.

Those groups will be show in the live stream at U.S., too.

Group 1 features Mickelson, Steve Stricker and Keegan Bradley; they teed off at 7:11 a.m. Group 2 features Woods-McIlroy-Scott.

Now, if only the weather will cooperate…

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