Like a fine sauce, the 27th PGA Professional National Championship contained almost every ingredient that could be squeezed into a golf event. The Championship was extended an unprecedented fifth day after heavy rain soaked the Lake of the Ozarks region in central Missouri.

The final round ended in a three way tie. Sammy Rachels, of DeFuniak Springs, Fla., who overcame four back operations over an 11-year Tour career (1975-85), won by two-putting for par on the second playoff hole. The Championship also featured a courageous final-round performance by Darrell Kestner, of Manhasset, N.Y., who suffered a severely sprained left ankle on the ninth hole and limped his way to second. Ron McDougal, of Purchase, N.Y., the 1992 National Champion, bowed out on the first playoff hole, only after completing a Championship in which he took a rare three days to post a course-record 6-under-par 65, during a rain-delayed second round on the Oaks Course.

Rachels, 44, earned a first-place prize of $32,000 from a total purse of $400,000. The top 25 finishers, with a score of 289 or lower, earned berths in the 77th PGA Championship at Riviera Country Club in Pacific Palisades, Calif.