Vice-champion Liverpool FC has again made a bad mistake against a basement child in the English Premier League.
A week after the 0-1 draw at bottom Nottingham Forest, Jürgen Klopp's struggling team also lost the home game against the table-18.
Leeds United 1-2 (1-1).
The Reds slipped to ninth place.
Just four minutes into the game at Anfield, Rodrigo Moreno picked up a miserable back pass from Joe Gomez and effortlessly slotted it in.
In the twelfth game of the season, the Klopp team conceded 0-1 for the eighth time.
Star striker Mo Salah managed to equalize quickly (14'), but shortly before the end Crysencio Summerville (89') sealed the home defeat of the Champions League round of 16.
Meanwhile, Manchester City ended their away goal crisis without the injured super striker Erling Haaland and took the lead in the table at least until Sunday.
The champions won 1-0 (0-0) at Leicester City on Saturday and got 29 points ahead of Arsenal (28), who meet West Ham United on Sunday (3:00 p.m.).
Havertz hits the head
Captain Kevin De Bruyne (49th) scored for the Citizens, in which national player Ilkay Gündogan played the entire distance.
Manchester had not scored an away goal in the Champions League in Copenhagen and Dortmund (0-0 each) and in the league hit in Liverpool (0-1).
Team manager Graham Potter also returned to his former club Brighton and Hove Albion with Chelsea - and lost 1: 4 (0: 3), although the Blues scored three goals.
Ruben Loftus-Cheek (14') and Trevoh Chalobah (42') conceded own goals after Leandro Trossard (5') made it 1-0 for Brighton, only German international Kai Havertz (48') scored a header on the right side .
The final point was set by Pascal Groß (90+2).
Haaland, who had scored 17 goals for ManCity in eleven league games, was substituted on Tuesday against his former club Borussia Dortmund with a foot injury.
However, team manager Pep Guardiola did not expect his top attacker to be down for a long time.