Tuchel says Chalobah deserved his recall for the 3-0 win.
He explained, "He can deliver these performances and he played a lot, so there is no reason to be disappointed for him. He has an unbelievable amount of matches from the start [of the season] and we know this. It's normal to have a bit of an up and down in terms of positive performance, that is normal.
"We informed the team very late today who plays. He did maybe not expect it. It was the same against West Ham where he came in on short notice. In both matches he delivered. This is the level he can deliver.
"It's about consistency. He lacked it a little in the last weeks and we did some other choices which is normal. But he needs to stay humble, hard working and he can be a big part of it."
Tuchel was also pleased to see Romelu Lukaku again on the scoresheet.
"It's always the right time to find rhythm. I'm happy he scored again and he wanted to stay on the pitch to get his goal. I'm happy as well for Puli (Christian Pulisic) and Mason (Mount) that we were decisive with the offensive players. This is important for them because it gives them confidence."
"We asked him how he felt because after 75 minutes, for a more heavy player with a big physical input after two matches, maybe it was good to go out. But I was aware he did not have his goal. Puli and Mason already scored so we left him on the pitch to try to get his goal and we're happy with how that worked."
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