The VAR had a controversy-free debut in the Scottish league, as St. Johnstone came from behind to beat Hibs.
Kyle Magennis was sent off for the home team in the 22nd minute of the game.
Within three minutes of Magennis' departure, Stevie May nodded the winner for the visitors.
The victory moves St Johnstone four points clear of the three teams tied at the bottom, while Hibs remain a point above Aberdeen and St
Hibs, perhaps inspired by their first capacity crowd in 33 years in this landmark fixture for Scottish football, started off quickly as they looked to respond to last weekend's 6-1 thumping by Celtic.
St Johnstone were exposed at the near post twice within a matter of seconds as Andrew Considine blocked from Martin Boyle and on-loan Troyes forward Kukharevych should have done better than fire straight at the goalkeeper.
It only took eight minutes for VAR to come into play as a quick check by Willie Collum back at the stadium confirmed Kevin Clancy's decision to show Boyle a yellow card for simulation after Alex Mitchell's challenge.
Just as they were limiting Hibs to long-range efforts, Kukharevych rose above Liam Gordon to head powerfully into the net from a Chris Cadden cross.
The half-time introduction of May gave St Johnstone more zip on the break, but Hibs remained the more dangerous until Magennis was sent off after lunging into a challenge on Jamie Murphy.
Down to 10 men, Hibs soon conceded when Clark rose above to Ryan Porteous and the goal was to stand.
May crossed to the back post from a former Hibs player.
There was still time for more VAR work, but officials didn't have to make a decision on whether to award a penalty when the first was ruled not to be in bounds.
The managers changed their formations as they looked to end their recent poor runs.
It seemed that Hibs' Lee Johnson was winning the tactical battle, and his players had responded to their manager questioning their mentality, until Magennis' departure.
Their run of five home games without defeat came to an end and they have suffered a third straight loss.
The introduction of May is going to be a turning point.
The Perth side ended a run of five games without a win against Hibs after scoring against them for the first time in four meetings.
"We had a spell of maybe 10 minutes where we gave the ball away too much, which allowed them a bit of momentum."
Kyle Magennis was a top player and unfortunately he made a mistake, he was playing very well.
It does get worse the more you look at it - maybe the contact isn't ridiculous, but it was enough to knock someone off of their momentum.
The first half was good, but we pressed them in the second half and the subs were good. The character won the game.
I wasn't happy with the first half performance, but I got a great reaction from them in the second half and the substitute showed great composure. The red card changed the game.
Next weekend, Hibs will play St Mirren and St Johnstone will play Killiwack.
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