Bakayoko started 25 Premier League games last season but did not really perform brilliantly.
Hazard only returned to training recently after his run to the World Cup semifinals, and Sarri, sensing he was not in shape for 90 minutes, started him on the bench.
Italy worldwide Jorginho passed home a fearless penalty in the 45th minute as Maurizio Sarri earned his first competitive win at the helm after his team went down to Manchester City in the Community Shield last weekend, while fellow debutant and the world's most expensive goalkeeper Kepa Arrizabalaga started with a clean sheet.
Antonio Rudiger praised Chelsea's club-record signing Kepa Arrizabalaga for being a vocal presence on the pitch despite his quiet nature off it after the goalkeeper kept a clean sheet on his debut against Huddersfield Town.
"We (Chelsea) have to play at another speed".
Chelsea's pre-season woes in front of goal vanished into thin air as Sarriball did not take too long to hit top gear.
Chelsea's new manager Maurizio Sarri says he has a month to whip his team into shape and make them familiar with the high-intensity, passing football which was nicknamed "Sarri-ball" during his time at Napoli in Serie A.
Things are looking good for Chelsea if he can maintain this sort of form.
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"I have to respect the characteristics of the players, I have to adapt myself to the characteristics of the championship and of the players, so now I am studying my players".
'We are lucky now as for four weeks we have only have a match a week.
He further stated: "The coach is trying to help us every single day to learn quickly his philosophy".
Both teams pressed for a large portion of the first half, and Sarri said those are the types of situations the team will need to work on.
When Sarri's Napoli team played RB Leipzig in a European tie, the German club set up a specially designed smoking room for him, though this won't be possible during his tenure at Chelsea.
"I think that Eden in this moment can not play for 90 minutes, he needs to have training", Sarri said of the Belgium star. "They had five chances and scored three goals", Wagner told reporters.
Huddersfield had given as good as they got before going behind to N'Golo Kante's scuffed 34th-minute volley.
"I feel very proud".