Ivanovic told the London Evening Standard: "What made the difference was Fernando's brilliance. To be honest the last few games, not just this one, Fernando has been flying. He's playing very well and I hope he will stay on this level in the next games.
"His chance (in the first half) was so difficult because everyone, including him, expected to be offside, but he stayed up after that which is positive. We are happy about him. We know how he is training and how professional he is every day. He is getting better and better."
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