Pedro was shown a red card against Arsenal in the Community Shield, and his sending off preceded Arsenal’s late goal via Kolasinac in the 82nd minute.
Conte has spoken about the Pedro incident and also talked about Willian’s yellow card for simulation.
The Chelsea boss said: “For sure there is disappointment to finish with 10 men for the second game against Arsenal, after the FA Cup final.
“I didn’t see the images; I also didn’t see the yellow card for Willian. A lot of people told me the penalty was clear. For sure there is a bit of frustration. You know very well you have to respect the referee’s decision, but for sure it can make you a bit angry.
“This game was a tough game for both teams. We tried to win, and we tried to improve our physical condition because in six days we start the league.
“Now the most important thing is to continue to work and to improve our team.”