Sanchez led Arsenal with 30 goals last season, including the opener in its FA Cup final triumph over Chelsea at Wembley in May.
Manager Arsene Wenger believes midfielder Aaron Ramsey will play after missing training on Thursday due to a "muscular problem", while Francis Coquelin is ruled out.
4 community shields in a row were won by the clubs who were victorious in the cup finals.
Arsene Wenger hailed an "outstanding" Sead Kolasinac after the signing scored in Sunday's Community Shield victory, and said the defender's physicality will make him a flawless fit for the Premier League.
"He's normally a fullback", Wenger said of Kolasinac. Made a fantastic stop in penalties against Alvaro Morata, of all people.
Arsenal's mental strength has regularly been questioned in recent years, but Wenger was happy that his side showed the character to get back into the game and then go on to win it. We play on Sunday.
Olivier Giroud is named on the bench. - The last two red cards issued in Community Shield matches have been to Chelsea players (Branislav Ivanovic in 2012, Pedro in 2017).
- This was Arsenal's third shootout in the Community Shield, having lost its previous two against Manchester United in 1993 and 2003.
The second half was less than a minute old when Moses reacted fastest against a static Arsenal defence to thrash home Gary Cahill's header. Kolasinac met Xhaka's free-kick delivery easily to equalise for the Gunners and became the first player to score his first Arsenal goal in the Community Shield since Gilberto Silva in 2002.