Mitchell and Shaun Marsh have joined an elite echelon of the cricketing fraternity, with the two brothers partnering up to score a century alongside each other in the same partnership.
Conjuring up memories of Mark and Steve Waugh, the pair became the first-ever brotherly act to both score tons together at the SCG, and the fifth band of brothers at any ground in cricket history.
The Marshes join the Waughs (twice), Zimbabwe's Andy and Grant Flower (once), Australia's Ian and Greg Chappel (three times) and Pakistan's Mushtaq and Sadiq Mohammed (once) to have achieved the feat in the same innings as each other.
But the historical moment was almost botched on the crucial, final run to complete the feat.
Mitchell Marsh drove Tom Curran through cover convincingly, setting off immediately for a run and bellowing with joy, his arms spread out in triumph.
Returning for a second run, Mitchell instead deviated straight for his brother Shaun, jumping into a mid-pitch embrace as the euphoria took over.
Suddenly, England sensed the sneakiest chance to spoil the party. Fielders started screaming for a throw to the bowler's end, with Shaun Marsh a long way from making his ground.
The embrace was aborted, with Shaun scampering home to make his ground.
"That was hilarious! That is going to be shown at Christmas time in the Marsh household for many years to come," former Australian opener Simon Katich chimed on ABC Grandstand.
"They decide to have a mid-pitch hug, but all of a sudden panic set in! They were worried about getting run out. Well done Mitch Marsh."
No sooner had Mitchell Marsh reached his century, he was out the next ball, bowled by Curran in some small consolation for the English fielders, baking in the Sydney heat.
Mitch keeping things light with serious Shaun
The ill-advised chance for a brotherly hug was a repeat from earlier, when Shaun Marsh had reached his century — his second of the Ashes series.
The left-handed Shaun also reached the milestone with a cover drive, celebrating in the direction of the changing rooms before Mitchell cantered over him for a cuddle.
For Mitchell, it was an innings that started with some difficulty the previous day, having to whether an awkward spell against debutant leg-spinner Mason Crane.
"Yesterday I had to fight probably harder than I have all summer. For my first 30 balls I may as well have batted left-handed, that's how it felt. I was pleased to get through that first period," he told Grandstand.
"I thought Mason Crane bowled pretty well to me early on and I was really struggling, but had to get through that and get the rewards later. It was a good lesson in cricket."
He says he's the joker of the pack alongside Shaun's straight man. In the dying stages of day three, Mitchell had the chance to put his brother on strike in the last over to complete his century before stumps, but couldn't pull it off.
"We don't have too much banter. Shaun's pretty serious in the field and I'm not. I try to keep him relaxed," Mitchell said.
"I asked him with a couple of overs to go, 'take the single here?', he said 'yes' and called me an idiot out in the field. I was just trying to do the right thing but then got booed for the last five balls of the over, so it wasn't a great feeling."
It mattered little. The pair would have their time in the sun on a blazing day four.