The 18th hole flag on Father's Day Sunday at the 2017 US Open is a tribute to one of the USGA's most important champions, Arnold Palmer.
On the final hole at Erin Hills, the typical US Open flag has been replaced with a red flag that is in the silhouette of Arnold Palmer when he won the 1960 US Open at Cherry Hills in Colorado as part of an epic final-day battle with then-amateur Jack Nicklaus and Ben Hogan.
— Brian Wacker (@brianwacker1) June 18, 2017
Palmer overcame a seven-shot deficit entering the final round to win his one and only US Open title. He won four Masters titles and two Open Championship titles to pull together his seven-major record.
Palmer died in September 2016 at the age of 86, with this US Open marking the first time the national championship will be played without Palmer alive to enjoy it.