Phil Mickelson was the headline maker on day one of the 145th Open Championship as he came close to a piece of golfing history.
The 2013 winner had a 16-foot putt at the last to card the first 62 in major history, only to be denied as a well-judged effort somehow lipped out.
Despite missing out on the lowest major score of all time, Mickelson is three clear of the field, with Patrick Reed and Martin Kaymer his nearest challengers.
Here we look at the social media highlights from an engrossing opening day's play at Royal Troon.
Second in 2005, Colin Montgomerie is very much an outsider for the Claret Jug but did at least display some resiliency to recover from a poor start before eventually finishing level par.
Two over after one Two under after eight pic.twitter.com/9e6feUy4u7-- The European Tour (@EuropeanTour) July 14, 2016
And Monty's caddie drew praise from one of last season's Super Bowl teams for his choice in headwear.
Your caddie has excellent taste, Colin. https://t.co/sQ1QPPl2Bo-- Carolina Panthers (@Panthers) July 14, 2016
It did not take Reed long to make an impression, doing so in spectacular fashion.
Louis Oosthuizen is eight shots off the pace in his bid to regain the title he won in 2010, but will at least have the memory of a hole-in-one to cherish whatever happens.
Reed built on his early promise to set a Royal Troon record, but he would soon be outdone by his compatriot.
Patrick Reed opens with 66.-- The European Tour (@EuropeanTour) July 14, 2016
Ties the lowest ever opening Open round at Royal Troon. pic.twitter.com/WzRMREA4md
Off the course, a two-time major winner was on hand as the Premier League's greatest goalscorer tested his finishing on the putting green.
It was a rough start for U.S. Open champion Dustin Johnson, who went on to finish level par.
Dustin Johnson had to lead a search party to find his ball on the first.-- PGA TOUR (@PGATOUR) July 14, 2016
He would start his day with a bogey. pic.twitter.com/w4a1Wnl9SM
Despite a bogey-bogey finish, the omens are good for defending champion Zach Johnson, who is out to replicate Tiger Woods' 2006 triumph.
Zach Johnson opened with a 67, the lowest opening score by a defending champion @TheOpen since Tiger Woods shot the same score in 2006.-- PGA TOUR Media (@PGATOURmedia) July 14, 2016
But it was Mickelson who stole the show with his agonising near-miss.
When you come THAT close to the lowest-ever round in a major... pic.twitter.com/loXjlgeonc-- The Open (@TheOpen) 14 July 2016
It may take some time for Mickelson's caddie to recover.
Mickelson's rotten luck earned the sympathy of a former world number one.
That was cruel #Phil-- Luke Donald (@LukeDonald) July 14, 2016
But Shane Lowry, who finished seven over, was pleased to see his hopes of a monumental comeback boosted.
That was big for me there. I would have never been able to come back from 16 behind. #phil-- Shane Lowry (@ShaneLowryGolf) July 14, 2016