It's never a quiet day at the office when a referee takes control of Rangers vs Celtic and Sunday's Scottish Cup clash didn't provide a new twist on an old narrative.

Rangers ran out 2-0 winners after controlling most of the first half, and although the Hoops had some excellent chances, they couldn't make their opportunities count.

In many ways it was the dream match for man in the middle Bobby Madden, with incidents elsewhere the focus of the subsequent punditry post-mortems.

But the whistler still ended up the subject of a mild rebuke from Steven Gerrard over his award of a penalty after Joe Aribo was adjudged to push Leigh Griffiths in the box.

It was one of four flashpoints where the referee had a major decision to make.

Record Sport looks back over the game's most controversial moments and assess if Madden made the right call.

Stephen Welsh Penalty Shout

With Rangers a goal to the good after Steven Davis' acrobatic opener, John Kennedy's men pressed forward with impressive character. They carved out a number of chances as Allan McGregor 's goal was peppered with shots but the best fell to the 21-year-old central defender Stephen Welsh. David Turnbull teased in a beautiful flighted ball from the left side and it seemed to evade everyone until Welsh ghosted in around the back of Filip Helander. The big Swede momentarily grabbed the youngster's arm but the kid's connection with the ball was misjudged, appearing to come off his heel with the goal gaping just five yards away. There's no doubt Helander made contact but there will be dubiety around if there was enough to justify a penalty call. Tellingly, Welsh himself made no claim, realising that a golden chance had been fluffed.

Verdict: Correct call

Leigh Griffiths Penalty

GLASGOW, SCOTLAND - APRIL 18: Rangers' joe Aribo fouls Leigh Griffiths and concedes a penalty during a Scottish Cup tie between Rangers and Celtic at Ibrox Stadium, on April 18, 2021, in Glasgow, Scotland. (Photo by Rob Casey / SNS Group)

Odsonne Edouard's tame free-kick rebounded off Rangers' defensive wall and towards the path of Griffiths. Aribo was closest to the striker and pushed him with his arm, sending the Scotland striker tumbling to the deck. While the Celtic star made the most of the contact and went down with a touch of drama, pictures showed a clear push by the Nigerian midfielder. While Rangers fans will argue there was not enough power in the movement to send the Celtic striker sprawling, there was still a clear infringement. It wasn't a stonewaller, but you'd see them given slightly more often than not.

Verdict: Correct call

Welsh tackle on Kent

GLASGOW, SCOTLAND - APRIL 18: Rangers' Ryan Kent is caught in the build up to the first goal, as Steve Davis celebrates during a Scottish Cup tie between Rangers and Celtic at Ibrox Stadium, on April 18, 2021, in Glasgow, Scotland. (Photo by Rob Casey / SNS Group)

Ibrox would have been in ferment when Welsh clattered Ryan Kent as he careered through the Celtic defence like a hot knife through butter. The Englishman had already whizzed past Scott Brown with a dazzlingly quick turn, creating a dangerous overload so from a game management point of view, Welsh did the right thing for his team in clearing the winger out. It looked a sore one, and the normally game Kent was clearly winded but Madden allowed play to continue and the the Ibrox men took advantage when Steven Davies volleyed home superbly. We often criticise referees for getting things wrong, so it's only right that this moment be highlighted as an example of top level officiating. Lesser refs would have stopped play here but Madden read the flow of the action superbly and allowed the advantage to Rangers.

Verdict: Correct call

Brown Booking

GLASGOW, SCOTLAND - APRIL 18: Scott Brown of Celtic fouls Ryan Kent of Rangers and earns a yellow card during the Scottish Cup game between Rangers and Celtic at Ibrox Stadium on April 18, 2021 in Glasgow, Scotland. Sporting stadiums around the UK remain under strict restrictions due to the Coronavirus Pandemic as Government social distancing laws prohibit fans inside venues resulting in games being played behind closed doors. (Photo by Ian MacNicol/Getty Images)

Another flowing break in the central position saw Scott Brown forced into a last ditch sliding tackle that sent Kent flying. TV pundits felt brown was hard done by to see yellow as it was felt he won the ball first. In truth, Brown took both ball and man at the same time. The challenge was desperate and he was not in complete control. In the 1980s it would have prompted raucous approval - but times have moved on.

Verdict: Correct call