Morata drew a blank again as Arsenal escaped Stamford Bridge with a goalless draw in the first leg of the Carabao Cup semi-final.
Rudiger said: "As a striker it's normal that you want to score. Of course there are a times when the head is down a little bit. But all I will say to him is 'to continue, to work for the team as you always do and the luck will come again'. I'm not worried about him.
"I don't know this (if the home crowd were getting on his back against Arsenal). I just know the whole team is with him and I think all the fans are with him.
"It's just a difficult period for him and I hope the best for him. Sometimes there are spells when you score and don't score, but his effort for the team is good and he always tries. If he scores again, everything will be fine.
"Can he win the second leg against Arsenal for us? Definitely. We saw it in the last round against Bournemouth. He had one chance and scored. When he does this again, everything will be okay."
Source: www.standard.co.uk