Brighton boss Roberto de Zerbi was left frustrated after victory at Chelsea.
It marked a first ever win at Stamford Bridge for the club, but they lost Joel Veltman and Evan Ferguson to injury during the game.
De Zerbi confirmed afterwards that both will miss the FA Cup semi-final against Manchester United at Wembley next Sunday.
We are losing too many players," admitted De Zerbi. We have a very tough last period of the season and in the next game we play in the semi-finals of the FA Cup but they are very good players and we can change things.
"For instance, Pascal Gross started today in central midfield and finished at full back. We have to organise to achieve our target for the next game and the rest of the season."
