A chance meeting on the bus from the Media Transport Mall to Ikebukuro, where a lot of journalists and photographers are staying in Tokyo, brought me into contact with the man of the day.
Bryan Keane was away first thing in the morning for the men's triathlon.
He competed for Ireland in the event in Rio five years ago as a 35-year-old and then retired the following May, returning soon after to what had been a passion of his over the years, photography.
The sports photography agency Inpho took him on and the Corkman has become a regular snapper at matches and events nationwide.
On Sunday, Keane headed to the Ariake Gymnastics Centre to capture the debut Olympic performance of Cork teenager Megan Ryan.
Job done, he was about to head off to cover another sport - the snappers cover the most ground of anyone at an Olympics by far - but Keane decided to hang around when the American gymnastics team arrived for their rotation.
Their rotation was actually out of turn, a nod to the influence of the American TV broadcasters on the Games.
So it was down to good fortune that Keane happened to be there and, with Simon Biles among their number, he decided to take some shots as they warmed up.
He tried around with various shots and methods before realising he might have something if he took a multi-exposure shot.
To the uninitiated like myself, that's a technique in which the camera shutter is opened more than once to expose the film multiple times.
The image that results contains the subsequent images superimposed over the original.
And whoever was next in his sights, that would be the subject.
As fate would have it, Biles was that gymnast and the shot that he Tweeted out on Sunday night in Tokyo is one of the most beautiful, affecting images you could hope to see.
It magically captured the glorious essence of the world's greatest gymnast.
The shot quickly went viral around the world. Biles herself was among the thousands and thousands of people who retweeted, liked and commented on it.
Perhaps ESPN journalist Tony Reali best summed it up, describing Keane's background as an Olympian before adding, 'GOAT capturing GOAT'.
Nicely put.
