That is according to Martin Keown.
Arsenal mustered every ounce of energy to scrape a 2-1 win over the Clarets.
After conceding a penalty, Sanchez converted his with a panenka in the 98th minute.
Alexis Sanchez scored a panenka against Burnley
Martin Keown was impressed with Alexis Sanchez's composure
Arsenal 2-1 Burnley: 10 key stats
Sun, January 22, 2017
Express Sport brings you 10 defining statistics from Arsenal's victory over Burnley at the Emirates
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Express Sport brings you 10 key stats from Arsenal's win over Burnley
When it goes down the middle, they end up looking stupid
Sanchez has had mixed success from the spot.
And former Arsenal defender-turned-pundit Keown was impressed with the composure shown by the Chilean hitman.
Speaking about the penalty, Keown told BBC’s Match of the Day: “It takes some bottle.
Tom Heaton couldn't keep out Alexis Sanchez's penalty
“I think young goalkeepers want to produce a big launch to try and save it.
“But when it goes down the middle, they end up looking stupid.”
Arsenal, who are second in the Premier League table, turn their attentions to the FA Cup next on Saturday where they face Southampton (5:30pm).