The Blues trailed Burnley by three goals in the opening 45 minutes - and although they mustered a comeback in the second half, they only succeeded in making the scoreline look respectable at 2-3.
'For sure he played very well, he scored a goal and played a good game'. "After this red card we lost our composure", the Italian told reporters.
Vokes, who scored two of those goals in the first half, admits his side were sloppy to allow Chelsea back into the game but feels after an atrocious away record past year, it was a huge result for the team and the club. Andreas Christensen made his debut as a sub for debutant Jeremie Boga, and Burnley took advantage of an unfamiliar Chelsea back three.
Chelsea fought back in the second with Alvaro Morata scoring shortly after coming on, before Cesc Fabregas was dismissed to leave the hosts down to nine men.
Matt Lowton's right-wing cross found Vokes and he sent a bouncing volley into the far corner, with Thibaut Courtois unable to get across in time.
But Burnley did put up a discipline, energetic and ruthless display that saw them 3-0 up before half-time, with Sam Vokes netting twice either side of a Stephen Ward goal. At the hour mark, Alonso's freekick was kept out by Burnley's goalkeeper, Tom Heaton.
"He's brought on Morata and he's taken off Batshuayi".
Morata's first goal in the blue of Chelsea came on 68 minutes when he stooped to head home a brilliant cross from Willian and give the Stamford Bridge faithful a bit of hope.
Conte will have some thinking to do, along with the board, as both Cahill and Fabregas will be missing for next week's match with Tottenham Hotspur.
At 3-0 down and going into the second-half there was little inspiration for manager Antonio Conte to turn to on the bench.
Burnley picked up just one away win in the Premier League last season and the visitors had to endure a nervy finish when David Luiz fired home after latching on to Morata's flick, but the Clarets held on to record a famous victory.