Chelsea laboured to a 3-1 over Southampton on Saturday to bounce back from two consecutive defeats.
The Blues lost against Manchester City and Juventus in the space of six days.
Tuchel made five changes to the side that lost in Turin.
Chalobah scored the first goal for Chelsea with a glancing header to give Chelsea a 1-0 lead going into the halftime break.
Timo Werner and Romelu Lukaku goals were ruled out in the first half.
Ward-Prowse scored for Southampton from the penalty spot after Chilwell fouled Livramento.
Timo Werner restored Chelsea’s lead with a tap in from Azpilicueta’s cross.
Chilwell put icing on the cake for the hosts with a superb effort.