Brighton's Danny Welbeck stunned table leaders Chelsea as they held Thomas Tuchel's men in a 1-1 draw on Thursday.
Although it seemed Chelsea would dominate the Seagulls, the Blues who got the lead in the first half had a bad day at the office as they struggled to face the pressure at Stamford Bridge.
Also Read Mikel Arteta tests positive, to miss Premier League games
Romelu Lukaku earned the lead in the 28th minute, but a dramatic stoppage-time equalizer by substitute Welbeck changed it all as he hurt Chelsea's Premier League title run badly.
After slumping to an embarrassing draw, Chelsea now stands at the 2nd position in the EPL standings, 8 points behind Manchester City. Brighton occupies the 10th place in the table