They will also lock horns at 1.45 p.m. on Friday.
Instead, Watson will play the first two rounds with fellow American Steve Stricker and Spaniard Sergio Garcia. [eap_ad_1] Five-time major winner Mickelson is 10th in the American standings, while Woods, who won the 2000 PGA Championship at Valhalla, is 69th.
Woods has been absent most of this year while recovering from back surgery.
The PGA has kept the tradition by grouping the winners of the first three major champions of the year – American Bubba Watson (Masters), German Martin Kaymer (U.S. Open) and Northern Irishman Rory McIlroy (British Open).
They will play at 1.45 p.m. on Thursday and 8.35 a.m. on Friday.
The world number one, Adam Scott of Australia, will play with Englishman Lee Westwood and American Jordan Spieth at 8.15 a.m. and 1.25 p.m.
Also, Jason Dufner will start his title defense in the company of two other former champions, fellow American Keegan Bradley and South Korean Yang Yong-eun at 1.55 p.m. and 8.45 a.m.
The PGA Championship is for every player ranked in the top 100 in the world. (Reuters/NAN)