Rudiger has done well yes but I feel he can improve at the same time, needs to work on his concentration. It doesn't help (as Liquidator points out) that he gets shifted about the back line but I think he was bought with that purpose in mind. We can be relatively happy with him though.
I 'm sorry but I refuse to be sold on this man, article written about him today:
https://www.independent.co.uk/sport/football/premier-league/chelsea-marcos-alonso-2017-18-newcastle-fa-cup-a8182926.html
The article makes the right point with regards to the system suiting him etc but this:
Myth 1: He's quite good in and around the opponent's box but it's his purpose within the system to do that, it's following strict tactical instructions from Conte. I can't take anything away from his finishing but why doesn't Moses get these goal scoring opportunities on the other side? Because we don't get any crosses in from Alonso's side. There's little productivity there in terms of attacking play.
Myth 2: He doesn't defend crosses well.
Myth 3: He never gets in crosses! Everything is inside or backwards, he rarely whips the ball around a defender or creates the space for that to happen. He looks for the pass inside all the time, he's very limited in that regard, his body is facing inside to the midfield a lot of the game.
As for Moses on the other side, he's becoming very predictable, can't remember the last time he actually beat a player, looks lacking in confidence in that regard. It was striking the other night when Iwobi had him in his pocket. I'm getting a bit tired of Moses running at a player only for it to result in him being dispossessed, would give Zappacosta more of a run in the team for the sheer reason that it's something different.
And I've always liked Batshuayi to be honest, I rate him.