Danny Welbeck scored on 86 minutes to claim a point for Brighton after Sheffield United took the lead through Jayden Bogle on his Premier League debut.
United were reduced to 10-men on 40 minutes when John Lundstram was dismissed for Chris Wilder's men following a nasty challenge on Brighton defender Joel Veltman.
Brighton appeared to heading for a painful home loss until Welbeck, who came on as a second half sub, fired home from close range.
Scroll down and click through to see who struggled and who shone for Graham Potter's men
5. Joel Veltman 6/10
On the receiving end of a nasty challenge from Lundstram, who was quite rightly red carded. Did not appear for the second half
6. Yves Bissouma 7/10
Another high level performance from Bissouma, especially in the first half. Tackled well and good distribution against an ultra competitive United midfield
7. Adam Lallana 7/10
Showed a different side to his game. Not at his creative best but worked tirelessly for 90 minutes and tracked back winning vital tackles
8. Leo Trossard 6/10
A better first half display from the Belgian but have should tested the goalkeeper after the break as he shot wide when well placed,