Jeffrey Bruma admitted Chelsea only had themselves to blame after throwing away victory against Aston Villa to deal their Barclays Premier League title defence a devastating blow.
Bruma was denied victory on what was his full debut for the champions as Villa snatched a last-gasp draw in Sunday's 3-3 thriller at Stamford Bridge.
The result left Chelsea languishing in fifth place, six points behind unbeaten leaders Manchester United having played a game more, and crucially outside the Champions League spots.
The Blues had staged a late fightback from 2-1 down to lead 3-2 going into stoppage-time but went to sleep to allow Ciaran Clark to steal in at the back post and head an equaliser. That piled the pressure back on manager Carlo Ancelotti, and Bruma acknowledged the fault lay squarely with the players.
The 19-year-old said: "Everyone knows Premier League games are always fast, quick, strong, so if we don't play our game then they will play their game and you will see that they will dominate us. It can happen.
"At the end, we were dominating them again and then you saw that we scored a goal. After, I think we should have kept the ball and been strong in the marking because the guy from Villa had a free header."