Wycombe 1 Chelsea 1: Jermaine Easter's late strike embarrassed Chelsea and earned Wycombe a memorable draw in the first leg of their Carling Cup semi-final at Adams Park.
Easter, who has scored in every round of the cup this season, finished coolly past Hilario with 13 minutes remaining to reward the League Two side against the Premiership champions.
Paul Lambert's minnows had started brightly but then fell behind to Wayne Bridge's opener, yet the side who had beaten Fulham and Charlton in previous rounds remained in the game and battled towards parity.
Lambert's men remain unbeaten at home since October and now have another cup hero after Roy Essandoh from the 2001 FA Cup run when they reached the same stage.
In contrast, Chelsea struggled to make chances and, despite being in the box seat to reach the final against Arsenal or Tottenham, were matched in every department on the night.