Raphinha scored in the 3-0 win and spoke with reporters in the aftermath.
However, when it was put to the Brazilian that he isn't matching the numbers he enjoyed last season, Raphinha bristled.
He snapped: "I've scored 8 goals in 13 league games this season. Do you think anything has changed since last season? You're the ones who can watch the games.
"I think I'm doing the same as last season.
"I'm never going to tell you that I'm at my best, because I'm a person who is always looking to evolve. I'm never going to tell you that it's my best moment."
Last season Raphinha had 12 goals and 8 assists by matchday 21, compared to 7 goals and 3 assists this season.
