A late goal at Elland Road saw 10-man Brighton beat nine-man Leeds to secure a play-off place for Gus Poyet's side in an ill-tempered match.
Will Buckley opened the scoring for Brighton in the 10th minute, with Leeds midfielder Rodolph Austin shown red shortly after.
Brighton's Inigo Calderon was sent off midway through the second half for a challenge on El-Hadji Diouf, who scored the resulting penalty before being sent off himself after appearing to abuse the away fans following the goal.
Jose Ulloa had the final word as he headed a late winner for Brighton.
More top news
Thursday's weather for the west of the region
Thursday's weather for the east of the region
Thursday morning's weather for the east of the region