Mikel Arteta feared for Arsenal after Marcus Rashford's goal because he thinks it's difficult to concede first against Manchester United.
Rashford's outstanding strike opened the scoring at the Emirates on Sunday afternoon, but the game was frantic and three goals followed that effort, with Eddie Nketiah, Bukayo Saka and Lisandro Martinez all finding the back of the net.
With the game level at 2-2 after Martinez's equaliser in the second half, Arsenal searched for a winner and they eventually found a breakthrough in the 90th minute through Nketiah again, who scored with an improvised finish to claim the victory.
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Arteta, who has led Arsenal to the top of the Premier League, reflected on his side's performance in his post-match interview and he explained he was worried following Rashford's goal because it's 'tricky' to be 1-0 down against United.
"I really enjoyed it. It was a beautiful moment at the end and we get going with our people behind us. It was beautiful," Arteta told BBC Sport. "I wasn't sure [winner], they were looking at something we hadn't seen and we very relieved.
"We got to celebrate twice. We showed a lot of emotional control - being 1-0 down to Manchester United is very tricky. They will kill you in big distances but we came back into the game. We stayed focused and I love this personality the players showed.
"We found the opening to win the game. They [Arsenal players] do surprise me with how they react. We encourage them to play free-flowing football and there is energy in the team and good things happen.
"To do it repeatedly against big teams, the way we played today, gives me a lot of positivity for the future. It is so tight now in the league, there are such small margins. Winning, losing or drawing, you have to be."
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