But Emery gave Cech the nod against City and the 36-year-old conceded twice as the Gunners were beaten 2-0 by the Premier League. The Gunners finished out of a UEFA Champions League place for the second year in a row, and only the second time since 1997, according to FBRef.com.
However, Emery is adamant that the aggressive style of play he will bring to the club will be the deciding factor this season.
Deployed as a lone striker this season, his hunt for goals begins against Premier League champions Manchester City at the Emirates. Kickoff is set for 4 p.m.
Arsenal's Sokratis Papastathopoulos falls down in front of Manchester City's Raheem Sterling during the English Premier League soccer match between Arsenal and Manchester City at the Emirates stadium in London, England, Sunday, Aug. 12, 2018.
In the United States, that start time will be 11 a.m. Pacific. Fans in India can log in to the live stream at 8:30 p.m. on Sunday.
Man City's domestic success has been well documented over the last few years, while Arsenal have failed to finish in the top four of the EPL in back-to-back seasons for the first time since 1996.
It was a serene afternoon on the touchline for Guardiola, just like so much of last season which ended with City setting a series of Premier League records, notably by amassing 100 points.
"It's a little frustrating to lose but we are a new team", he said.
"That's my experience at Bayern Munich and Barcelona". It's about the mix, when you have a defensive or attacking moment, and I want every player to improve in this way.
That difference was clear in a one-sided first-half.
There was the odd mistake, most notably from goalkeeper Petr Cech, but Emery's influence is already visible and had they not been playing Guardiola's team, Arsenal would probably have taken something from the game.
Arsenal are likely to press in the early stages, if Emery's approach against Guardiola in the past is anything to go by.
There is no rest for the tired in England's Premier League as the 2018-19 season is underway. This sums up Arsenal's day.
"Our style with the ball is to be protagonists, to do things with combinations, to control the match with the positioning of the ball", Emery told Sky Sports.