Chelsea drop two points in the top-four battle with a goalless draw at Leeds.
Roberts had a goal ruled out in the first half and hit the crossbar, while Llorente hit his own bar from the visitors’ best moment of a rather disappointing game.
The closest either side came to a second-half winner was Rodrigo’s weak header 12 minutes from time.
Tuchel’s side are now three points better off than West Ham in fifth, though they have played two games more than both their London rivals and Everton, who are five points worse off.
Next up for Chelsea is a Champions League last-16 tie with Atletico Madrid on Wednesday,
while Leeds – now within two points of the top half – head to Fulham on Friday.