Arsenal drew first blood by clinching the Community Shield in a penalty shootout victory over Manchester City on Sunday.
Man City appeared destined to win after Cole Palmer's 77th minute strike, before Leandro Trossard took the game to penalties with an equaliser in the 11th minute of stoppage time.
Kevin De Bruyne and Rodri failed to score from the spot, with Arsenal's Fabio Vieira sealing the trophy for the Gunners.
The result will give Mikel Arteta's side inspiration going into the new season, after they were pipped to the title by Sunday's opponents last season.