Arsenal boss Mikel Arteta was thankful VAR was in operation for their 2-0 win over Newcastle in the FA Cup and praised the growing importance of Emile Smith Rowe.
The 20-year-old proved the difference for the holders and grabbed the opener in the 109th minute after the tie had gone to extra time.
It could have been a different ending for academy gradate Smith Rowe had the video assistant referee not told referee Chris Kavanagh to review a decision deep into stoppage time.
Smith Rowe was shown a red card for a challenge on Newcastle’s Sean Longstaff, but after the pitchside monitor was used it was downgraded to a yellow and the youngster made the most of his reprieve to help the Gunners through to the fourth round.
Only nine of the 32 ties across this weekend will have VAR – those played at Premier League grounds.
And Arteta said: “I was going mad because when I saw the action on TV, I didn’t think that he could get sent off but thank God the regulators decided to have VAR and today it worked the way it should work, so I am so happy to have that.
“We believe in Emile, he is doing really well. He is growing and becoming more and more important in the team.
“Today he showed that again the way he came on, the personality that he played with and we asked him to be more in the box, more of a threat in front of goal and he scored a really important goal for us.”
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Smith Rowe was the first person Arteta turned to on the bench following a drab hour of play at the Emirates Stadium, where chances were at a premium.
His introduction, coupled with Bukayo Saka and Granit Xhaka coming on later in the half, helped Arsenal start the defence of their title with a 2-0 win.
Captain Pierre-Emerick Aubameyang had been a peripheral figure before Arteta called for the cavalry but grabbed his sixth goal of the season with a 117th-minute tap-in from Kieran Tierney’s centre.
It was another positive for the holders, but they were dealt a blow before kick-off when Gabriel Martinelli, who only recently returned from a serious knee injury, suffered an ankle issue in the warm up and was forced to miss out after being named in the starting XI.
Arteta admitted: “I am gutted. I was in my office before the game and one of the coaches came in and said Gabi hurt himself and twisted his ankle.
“I went to the medical room and he was in tears and in a lot of pain. We are going to have to see how he is. It didn’t look good, he was in pain so I imagine we are not going to get good news with him.”
Martinelli will go for a scan but is expected to miss Thursday’s home fixture with Crystal Palace in the Premier League.
“It is his character that he wants to play the next game, that he doesn’t care and can handle pain,” Arteta said.
“Hopefully there is nothing too serious, but to start with it didn’t look good.”