After closing with a 62 at the Tournament of Champions this month, Chris Kirk showed up at the site of his next start and learned he had been randomly selected for out-of-competition testing as part of the PGA Tour’s antidoping program.

The timing prompted Kirk, tongue in cheek, to post on Twitter: “Like clockwork, tie course record on Monday, drug test on Wednesday.”

On Saturday, after his round at the Humana Challenge in La Quinta, Calif., Kirk said he was happy with “any and all drug testing.” All golfers with gold medal aspirations should feel that way, because the antidoping program they are set to join is considerably less predictable and more invasive.

In advance of golf’s return to the Olympics next year in Rio de Janeiro, the golfers will be under the aegis of the World Anti-Doping Agency. The agency operates its testing program much differently from what golfers, especially those from the United States, have come to expect. Consider Kirk, whose first exposure to drug testing, he said, was during his freshman year at Georgia. Describing the N.C.A.A. protocol, he said, “They’d notify you the afternoon before, and you had to be there the next morning at 6 a.m. to give a sample.”

via For Olympic Hopefuls, Antidoping Rules Will Be an Adjustment – NYTimes.com.