Arsenal defeated Manchester United 1-0 away in a first-round match in the Premier League, BTA reported.
The first danger after six minutes of play in the "Old Trafford" derby was for the hosts, as new signing Brian Mbuemo forced goalkeeper David Raya to intervene decisively.
In the 13th minute, Ricardo Calafiori took advantage of a blunder by goalkeeper Altay Byander and scored the winning goal for the Londoners.
New attempts to score a goal followed by the "Red Devils", with Mbuemo and Mateusz Cunha coming close to equalizing. The "Gunners" responded with a shot from Vartin Odegaard.
After the break, David Raya again prevented Bruno Fernandes from bringing the hosts back into the match. The Spanish keeper denied Amad Diallo and again Mbuemo, who were close to scoring.
At the very end of the match, Bukayo Saka failed to make Arsenal's victory more expressive.
On Monday night, the newcomer to the elite Leeds and the Bulgarian international Iliya Gruev welcome Everton.