The Arsenal midfielder politely answered everything asked of him in his post-match interview after Arsenal's dramatic 3-2 victory over Crystal Palace on Thursday night but he has clearly grown exhausted of answering the same old questions every time he shows glimpses of what he's capable of.
On the occasion where he equalled Sir Alex Ferguson's record of 810 Premier League games in charge, Arsene Wenger saw his side start out with plenty of verve but their vigour was matched by the hosts.
Wilfried Zaha was Palace's most threatening player throughout the first half with the Ivorian maintaining the form that has seen him linked with a number of top clubs this season.
But that seemed to be the scare Arsenal needed to jolt them back into life, as Sanchez - who will enter the final six months of his contract on January 1 - took over to leave Palace wondering what had hit them.
Arsenal drew level with fourth-placed north London rivals Tottenham Hotspur but with a worse goal difference whilst Palace remain firmly embroiled in a battle against relegation just a point above the bottom three.More news: Amanda Davis Cause Of Death
Arsenal looked focused and in control during the early exchanges and produced some neat football which led to chances.
At that point Palace were in the ascendancy but Sanchez's quick double soon killed off the home side's hopes.
Arsenal's Alexis Sanchez celebrates scoring their third goal.
Zaha beat Calum Chambers easily and cut a pass back towards the penalty spot, where Townsend arrived to send an emphatic strike into the bottom-left corner. The Eagles are unbeaten in their last five games.