Padraig Harrington does not take the unwritten rules of golf lightly. That was apparent after the three-time major winner got into a heated conversation with formerPGA Tour pro Roger Maltbie during the second round of the U.S. Senior Open on Friday.The dispute between the twogolfers was captured on video and appeared to be a matter of golf etiquette.In a video posted by KOAA reporter Brett Forrest, Harrington can be heard saying, "Never on agolf course stand and look at somebody looking for a golf ball."CLICK HERE FOR MORE SPORTS COVERAGE ON FOXNEWS.Maltbie, a five-time PGA Tour winner and current on-course analyst for NBC, appeared to push back, but Harrington was unrelenting."Youve played golf all your life," he said.Harringtons caddie, Ronan Flood, then walked into the conversation in an attempt to defuse the situation, but Harrington continued on."You dont stand looking at somebody looking for a ball."TWO-TIME MAJOR CHAMPION COLLIN MORIKAWA HAS CONTENTIOUS CONVERSATION WITH REPORTER: 'DON'T PUT ME DOWN'For his part, Maltbie didnt appear to disagree with the sentiment of good sportsmanship, but as he explained it, he had a job to do."I understand, but I have a company that pays me," he began before Harrington interrupted.The confrontation carried on without any resolution. Maltbie said he believed Harrington was "dead wrong," and reminded the pro, "Im not a player."The two eventually separated, seemingly to agree to disagree.Despite the minor hiccup, Harrington entered the weekend tied for first with Stewart Cink and Mark Hensby. The trio sit at the top of the leaderboard at 6-under 134.Follow Fox News Digitalssports coverage on X, and subscribe tothe Fox News Sports Huddle newsletter.