It was a welcome, if rare, win at Parkhead for Hibs on Sunday, with David Gray ending a 16-year run for Hibs without a win at Celtic.
In doing so, Gray became the first Hibs manager to beat Celtic home and away since Alex Miller.
Gray is something of a history maker at Hibs. He's had his critics but there's no denying that he's also something of a master of using past adversity to shape present performance.
Two of Gray's January recruits got the goals - Felix Passlack bulleted his header past Kasper Schmeichel to give Hibs the lead before Kai Andrews stroked a shot home from the edge of the box to restore Hibs' lead after Celtic had been reduced to ten men.
It was a moment of madness from Celtic's Auston Trusty that saw him see red for lashing out at Jamie McGrath in the second half, and while the referee saw the incident, it took a VAR intervention for him to see the severity of Trusty's strike.
Gray has been criticised by some for being too reluctant to go and win games, but there was no question that he chased the win - with the man advantage, Hibs stepped up a gear and Celtic were suddenly chasing the game.
A special mention must go to Miguel Chaiwa, who put in a performance in midfield that we've not seen in Glasgow since John McGinn left the club.
The youngster was incredible, showing as much technique as he did tenacity to set the tone for Hibs in the middle of the park.
Hibs will be hoping to keep him at the club for as long as possible on Sunday's showing.
You can find Matty Fairnie at Longbangers podcast