Arsenal captain Granit Xhaka was involved in an angry confrontation with his own supporters as Crystal Palace came from two goals down to earn a point in an ill-tempered atmosphere at Emirates Stadium.
"I am frustrated on one hand, but on the other hand we could have also lost the game," manager Eddie Howe said.
"Keeping a clean sheet away from home is positive, but having our third game without scoring is certainly negative.
Everton boss Marco Silva, speaking to BBC Match of the Day: "If VAR saw something in our box, why didn't it see 15 minutes earlier the penalty for Richarlison.
"Because of that my players are in the dressing room and don't understand.
West Ham manager Manuel Pellegrini speaking to MOTD: "In football, you must score. We dominated the game and tried to create options to score.
"We had two or three chances and must decide the game by scoring.
Leicester City equalled the 24-year-old record for the biggest ever Premier League victory as 10-man Southampton were dismantled at a rainswept St Mary's.
The victory sees Brendan Rodgers' side climb into second place, leapfrogging Manchester City and moving five points behind leaders Liverpool.
Manchester City boss Pep Guardiola: "After the international break, to play here at Selhurst Park and create a lot of chances was good. We played well but didn't score too many - but we didn't concede.
Southampton manager Ralph Hasenhuttl said his side knew it was "time to show up" after they carved out a point against Wolves.
"You could feel it in the dressing room. Everyone knew it was time to show up," said Hasenhuttl.
Leicester manager Brendan Rodgers: "We were keen to make it a celebration. The supporters were incredible. We needed to tap into that emotion, we didn't in the first half but we were much more aggressive after half-time.
Chelsea manager Frank Lampard, speaking to Match of the Day: "The second half was the most pleasing thing. It was a good test for us today. We changed things a little in the second half and we showed a little more flexibility and creativity.
"It was a captain's performance," said Villa manager Dean Smith.
"For the other side of the game people don't see, Jack ran 60 yards to back dispossess players [at times]. He was integral to everything, he got the goal and provided an assist.
Everton manager Marco Silva insisted "pressure is a privilege" after a 2-0 win over West Ham United dampened speculation about his Goodison Park future.
"Pressure has to be a pleasure, a privilege for us," he said.