The Gunners showed their readiness to go again with an impressive demolition of Man City in the Community Shield last weekend and they sent another statement to their rivals for the crown with this demonstration of dominance.
Once again new signing Christos Tzolis shone. The Greece international notched two assists at the Principality Stadium and was involved in Arsenal's first two goals on his Premier League debut, first winning the ball back for Riccardo Calafiori to tee up Kai Havertz and then sending in the cross Coventry 'keeper Carl Rushworth diverted into Bukayo Saka's path. "What a left-winger Arsenal have got," purred Sky Sports' Jamie Carragher on co-commentary.
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This was a reality check for Coventry on their return to the top flight after 25 years away. They failed to make a tackle in the first half - they could not get near Mikel Arteta's men. It did not get much better for them after the interval, with Martin Odegaard's miscued finish adding a third for Arsenal just four minutes into the second period.
With Ben White, Saka and Odegaard combining brilliantly through the right channel, Tzolis electric on the left, and Havertz looking sharp ahead of some slick midfield play from Declan Rice and Myles Lewis-Skelly, Arsenal already look up to speed and formidable.
Their defence was barely tested but Ezri Konsa's pre-match welcome, following his £55m move from Aston Villa, was a reminder they have brought even greater strength and depth to that department, too. Tougher tests are to come, but they are going to take some stopping.
Coventry, meanwhile, will be relieved they do not have to face Arsenal again until April. They host Hull City next weekend in a fixture which will carry far more significance for their season.
The key moments from the Emirates
5: SHOT! Tzolis shoots over after cutting inside from the left flank.
7: OVER! Saka's shot is deflected over after Tzolis pops up on the right.
8: CLOSE! Tzolis is involved in everything Arsenal do in attack but sends his second shot of the game over after a well-worked short corner.
9: OVER! Declan Rice shoots over from 25 yards as Arsenal make a fast start.
15: GOAL! Tzolis wins the ball off Milan van Ewijk deep in Coventry territory, Calafiori crosses low for Havertz and the striker sweeps in a fine finish to give the Gunners the lead.
23: GOAL! Rice and Odegaard combine in midfield and Saka is perfectly placed to tuck in when Tzolis' cross is diverted into his path by Coventry 'keeper Rushworth.
34: CHANCE! Arsenal work the ball into the Coventry box and White is onto it but sees his shot blocked away. Coventry scrambling.
43: SHOT! Loum Tchaouna's overhead kick from the edge of the box loops onto the roof of the Arsenal net.
45+1: CLOSE! Rice whips a shot beyond the far post after another short corner.
49: GOAL! Odegaard, Saka and White combine through the right channel before the captain's miscued shot deceives Rushworth and adds Arsenal's third.
53: SAVE! Rushworth tips a curling effort from Lewis-Skelly over the bar for a corner as Arsenal keep their pedal to the metal.
66: SHOT! Tzolis stings Rushworth's palms with a drive from the edge of the box from an Arsenal corner.
90: SAVE! Rushworth is at full stretch to prevent Havertz arrowing in a fourth after some neat footwork from the Arsenal striker.
