Chelsea team has been able to perform well in previous matches. There are some players in the Chelsea squad who are currently at their best. However, some matches were very badly defeated by Chelsea. As such, Chelsea are in a fair position.
Which match do you mean perform well?
Being hold to a draw by a team like Everton, or lost from a team struggling in the relegation zone like Southampton. I have never see Chelsea perform this well before, they even lost in the 1st leg of the UCL round of 16 when they had an away match
How will Chelsea deal with the quarter-final situation, Real Madrid is ready to become a hindrance for them
Well in their most recent games, they got a tie with Everton that's true, but managed to beat Leicester, beat Dortmund, beat Leeds, these are all games and along with that they also lost to Spurs, lost to Southampton and first game was a loss to Dortmund as well. When you look at that, there are games where they played nice, and there are games where they sucked.
I wouldn't say they are a good team, but being able to move this further in UCL and be in quarter finals is an achievement in itself if you ask me, not a bad season there. The only thing that sucks for them is the premier league, if they were like 5th in the league and finish the season 5th and also lose at quarter finals then we would have said they are doing normal.