Alex Iwobi's Everton got all three points in their game against Arsenal at the Emirates stadium today.
An own goal from German goalkeeper, Bernd Leno secured all three points for the Toffees against the Gunners.
After the game, Mikel Arteta revealed why his team lost to Carlo Ancelotti's side at home.
Arsenal manager Mikel Arteta to BBC Sport: "On the pitch performance wise we were the better team, we controlled the game and we had some opportunities and openings. We had a clear penalty that was disallowed somehow and then we score an own goal.
"The penalty is clear, those decisions have been made after, I don't know how or who by, we cannot see their faces to explain it. It's the second time in two weeks.
"I can see the images 20 times and I don't get it.
"Errors are part of football, we conceded an own goal that defined the game at the end. We didn't create enough against a team that is well organised, we lacked clarity in the final third.
"We need to go through the disapopintment and focus our energy, the semi-final is more than crucial for us. I don't want to use any excuses, I understand the protests."
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