Brighton struck twice in second-half stoppage-time as 10-man Chelsea threw away the lead to slump to a 3-1 Premier League defeat at Stamford Bridge. Maxim De Cuypers header put Brighton into the lead at the start of 11 added minutes at the end of the match to stun the home side, who had laboured ever since the dismissal in the 53rd minute of Trevoh Chalobah.