Arsenal conceded an equalizer in the fifth minute of stoppage time to draw 1-1 at Sunderland, while Tottenham scored three times in the last 15 minutes to beat Wolverhampton 3-1 in the English Premier League.
Second-place Arsenal led through Cesc Fabregas' freak goal, but Alex Song was sent off in the second half and Tomas Rosicky missed a penalty before Darren Bent struck late for Sunderland on Saturday.
Spurs fell behind on the stroke of halftime through Steven Fletcher's goal, but Rafael van der Vaart equalized from the penalty spot in the 75th and Roman Pavlyuchenko and Alan Hutton completed the comeback.
West Ham, which had lost four straight matches, was held to 1-1 by Stoke, while Everton is also still searching for its first win after being beaten 1-0 by Newcastle.
Clint Dempsey rescued a 1-1 draw for Fulham at Blackburn, Aston Villa was held at home by Bolton by the same score, and West Bromwich beat local rival Birmingham 3-1.
Chelsea, which hosts Blackpool on Sunday, has a one-point lead over Arsenal at the top of the standings.
Arsenal led after 13 minutes at Sunderland when Fabregas charged down Anton Ferdinand's clearance 35 yards (meters) from goal and the ball ricocheted over stranded goalkeeper Simon Mignolet and into the net.
Arsenal was reduced to 10 men in the 55th when Alex Song was booked for the second time for a foul on Steed Malbranque.
Fabregas was forced off with a hamstring injury in the 29th and replacement Rosicky sent a penalty high over the cross bar in the 74th after Samir Nasri was fouled by Ahmed Elmohamady.
Bent forced the ball into the net in a goalmouth scramble after Gael Clichy and Laurent Koscielny failed to clear.
Arsenal manager Arsene Wenger was angry that the match was still continuing after the four minutes of injury time initially announced had already elapsed.
"Nothing happened in those four minutes to justify them adding more," Wenger said.
Tottenham looked to be experiencing a European hangover when Fletcher slammed in Kevin Foley's low cross from close range for Wolves.
Three days after Spurs made their Champions League debut, they struggled to break through the Wolves defense until Alan Hutton's run into the penalty area was halted by Stephen Ward's mistimed diving challenge. Van der Vaart, the deadline-day signing from Real Madrid last month, scored from the penalty spot.