But Oxlade-Chamberlain claims his Chilean team-mate routinely returns to the dressing room in a bad mood.
The midfielder cited an incident that happened after the 2-0 win over Crystal Palace on New Year’s Day.
Alexis Sanchez is very demanding, according to Alex Oxlade-Chamberlain
Alex Oxlade-Chamberlain reckons Alexis Sanchez is hard to please
Alexis Sanchez looks absolutely distraught after Arsenal's defeat to Watford
Tue, January 31, 2017
Alexis Sanchez looked absolutely distraught after Arsenal's defeat to Watford
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Arsenal lost 2-1 to Watford on Tuesday
He always wants assists, he wants goals and that's what makes him the player he is
“He's definitely one of those players who will tend to bring out the best in you because he's very demanding of himself and everyone else,” Oxlade-Chamberlain said.
“The number of times we've come off the pitch and we've won, but he's still not happy with something.
“The Crystal Palace game for example, we won 2-0 and right at the end of the game he's cut in and he passed it to me. I shot and Wayne Hennessey saved it.
Arsene Wenger's side will be desperate to bounce back from their defeat to Watford
“The boys were all happy in the dressing room but Alexis came to me in the shower and said, "My friend are you going to score? Oh no my friend … I passed you the ball, you have a cup of tea, you wait … and then you shoot".
“I was just laughing like, 'Yeah, sorry my friend'.
“He always wants assists, he wants goals and that's what makes him the player he is. He's always hungry for that and he passes that on to us all.”
Arsenal, who lost 2-1 to Watford on Tuesday, will be hoping to get back on track against Chelsea tomorrow (12:30pm).