Manchester City thrashed Newcastle United to go three points clear of Liverpool at the top of the Premier League.
Raheem Sterling and Aymeric Laporte put City in control at the break as they blew away the cobwebs from Wednesday's Champions League defeat at Real Madrid.
Rodri's header just past the hour mark added a third for Pep Guardiola's side.
Substitute Phil Foden made it four late on and there was time for Sterling's second to round off the scoring.
Afterwards, Grealish said: "We knew there'd be pressure on us today after the defeat, we bounced back perfectly. We've stuck together which was needed.
"We'll try to end the season strongly and we did that today."
On whether they have talked about boosting their goal difference, he added: "It wasn't really spoken about but it's common sense. We want to win the league so we see it ourselves.
"The main thing was to get the win. You can't speak about goal difference before you've won the game.
"Newcastle have been brilliant since January. Today was a perfect response and a perfect performance.
"We just have to go out there and win every game. We're in the driving seat. We can't look at what's going on around us. Fingers crossed. "
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