Arsenal won the traditional curtain-raiser Community Sheild at the Wembley Stadium with a 4-1 scores on penalties after Sead Kolasinac’s powerful header cancelled out Victor Moses’ opener in normal time
The game had ended 1-1 after 90 minutes, leading to a shootout.
Chelsea goalkeeper Thibaut Courtois and striker Alvaro Morata both missed in succession. Arsenal duo Alex Oxlade-Chamberlain and Giroud then both converted their kicks to clinch the victory.
Chelsea had led during the game, with Victor Moses scoring inside a minute of the second half.
Pedro Rodriguez was dismissed in the 80th minute for a studs-up sliding challenge on Mohamed Elneny.