SOUTHPORT, England — Jon Rahm was given a code-of-conduct warning Friday in the British Open for throwing his club after a poor tee shot on the par-3 15th hole, the third conduct ruling in the majors this year.The majors have been getting serious about conduct this year, collaborating on a policy but leaving each organization in charge of what it deems a serious offense.Rahm, who shot 3-under 67 and was four shots out of the lead, hit his tee shot left of the green on the 15th hole and flung his iron forward and it bounced a few times.The R&A said Rahm was issued the official warning “under The Open serious misconduct policy.” The policy typically is in play for the entire tournament, meaning if there is another incident, it would be a two-shot penalty. The third violation is disqualification.Rahm said he didn’t think about his outburst until he saw an R&A official on the 17th hole.“When he was walking up to me, I knew exactly what it was for,” he said.The USGA bypassed the warning and went straight to a two-shot penalty for Joaquin Niemann in the first round of the U.S. Open when on the sixth hole — his 15th of the round — he threw his wedge that traveled some 70 yards. With hardly any spectators, no …
