Open Championship groupings, tee times set

Spieth, who is ranked sixth in the world, has not won since his Open victory a year ago at Royal Birkdale. He missed the cut last month at the U.S. Open.

The three-time Open winner will play Friday's second round at 10:20 a.m. local time (5:20 a.m. ET).

Among some of the other notable groupings:

Masters champion Patrick Reed tees off with South Africa's Louis Oosthuizen and England's Paul Casey at 10:20 a.m. (5:20 a.m. ET); U.S. Open champion Brooks Koepka is playing with England's Ian Poulter and Australia's Cameron Smith at 2:59 p.m. (9:59 a.m. ET); and 2013 Open champion Phil Mickelson gets started at 8:03 a.m. (3:03 a.m. ET) along with Japan's Satoshi Kodaira and Spain's Rafa Cabrera Bello.

The 147th Open begins at 6:35 a.m. (1:35 a.m. ET) with former champion Sandy Lyle of Scotland along with two-time major winner Martin Kaymer and Andy Sullivan.

The final group -- Matt Jones, Thomas Curtis and Bronson Burgoon -- does not begin play until 4:16 p.m. (11:16 a.m. ET)

All 156 players begin at the first tee.