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Chelsea beat Tottenham 2-0 on Sunday thanks to a brace from Willian.
The Brazilian hailed the victory over Tottenham as one of Chelsea’s best performances of the season.
Willian also urged his teammates to be more consistent as he warned Chelsea cannot keep going up and down.
“I’m happy of course with the two goals but the most important thing is always to win the game,” the 31-year-old told Chelsea’s official website. “We did a brilliant job. It was a big win, a big game and everyone is happy.
“We fought for every ball. We know we have the quality to play but this kind of game is about how you fight and be mentally strong – we did everything.
“It was one of our best performances of the season but now we have to keep doing the same. We cannot keep going up and down, we have to carry on and keep the momentum. We have many games coming and if we want to stay near the top, we need to win more of them.”