Bayern Munich ran riot in the first 30 minutes of their International Champions Cup match against Premier League champions Chelsea, with new club record signing Alvaro Morata unable to prevent a defeat for the Blues.
Bayern were clearly keen to make up for Saturday's embarrassing 4-0 defeat to AC Milan in Shanghai and Conte's side had perhaps underestimated the impact of that result on their opponents.
Since then, Bayern have settled back into being the dominant side in Germany, having just finished their fifth straight title-winning season in the Bundesliga.
Marcos Alonso pulled one back before the break when Victor Moses' cross evaded everyone and went to the back post - with Alonso lashing into the corner.
But a sluggish start left them with too much to do against a rampant Bayern.
Chelsea went behind early on as Rafinha put the German champions 1-0 up with a low shot from the right which took two bounces and skipped inside the far post and past Thibaut Courtois.
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Bayern struck three times in the first half with Rafinha opening the scoring and Thomas Muller clutching two for himself.
James could have put the game out of Chelsea's reach but missed two flawless chances to score while Conte reacted by bringing on Morata for his Chelsea debut.
In the sixth minute, Rafinha long-range shot opened the score, then müller at the far post slotted home a ideal pass Ribery. "Despite this, the players' response was very good because we didn't give up".
Chelsea have already beaten Arsenal in pre-season, and will take on Inter Milan next before a final warm-up in the Community Shield before the league season gets going.
Morata, who joined the Blues from Real Madrid for an initial £58m which could rise to £70m, made an instant impact for his new team after being introduced as a 63rd-minute substitute.