It was telling that Chelsea's first two goals came from their only two shots on target in the first half, and that one of those was a penalty, awarded for Christopher Schindler's foul on Marcos Alonso after a nice flick from Ross Barkley.
Jorginho's arrival saw N'Golo Kante move into a slightly more advanced role, and while he adapted characteristically well, popping up at the back post to volley home the opener in the 34th minute, Chelsea struggled to play through midfield.
Eyes were obviously on debutants Jorginho and Arrizabalaga and the pair gave excellent accounts of themselves, with the former scoring a cheeky penalty in the first half. In Hamer's case, he simply fell to the ground and watched the ball slowly roll by. Hazard drives forward, slipping through Pedro at the flawless moment. We did it better in the second, but in the second, there was more space and time.
Willian (Chelsea): Produced a driving performance, creating the first goal with his explosive pace and trickery. If you look at the result you can think of an easy game.
Also, Jorginho only misplaced four of his 66 attempted passes, recording an accuracy of 93.9% - the best of any player to start the match.
Chelsea will be top of the league come Saturday night but there's still one problem - Alvaro Morata.
"He is able to play between the lines of the opponent, for us that could be very important".
Unfortunately for Huddersfield and Kongolo, Chelsea managed to score twice before half-time which stretched the defence.
With the first global break four weeks away, Sarri says that only now can he really get to work, as World Cup stars such as Eden Hazard, Olivier Giroud and N'Golo Kante returned to training just last week.
But the 17-year-old was left out of the matchday squad altogether, with Pedro and Willian starting out wide and Hazard and Victor Moses the options from the bench. "But, for the moment, he's not Courtois, of course", Sarri told a pre-match press conference.
"The Chelsea-transfer-news-Eden-Hazard-Real-Madrid" Sunday Express says new Chelsea boss Maurizio Sarri is adamant that the club will resist any offers for Hazard before the European transfer window closes.