Arsenal dug deep Monday night to end their 14th year nightmare at Southampton and grab the vital three points to keep alive their hopes of winning a spot in the top four in the English Premier League.
After a boring first half, Sanchez produced a moment of magic to open the scoring when the Chilean wrong-footed two defenders in the box before calmly slotting home.
On Sanchez's well-taken goal, Wenger added: "That's Alexis, he's a player that never gives up and is tricky to stop". He's very good in short space, and in the box.
Yes - the match will be televised on Sky Sports in the UK.
"Alexis always grows during the game".
Southampton started the match strongly, much better than their recent performance against Liverpool.
"We have another clean sheet, we are more stable defensively and I know we can go forward and score goals".
Wenger also spoke highly of Giroud as he scored his sixth goal as a substitute this season.
"We had a few opportunities and luckily we scored two".
"He has been incredible for us", Wenger said.More news: Chelsea's Premier League title triumph in numbers
"It's hard to assess now after the game", Wenger said.
"I'm always harsh with the one that doesn't play". It's a good opportunity to show your character, how you come back and how you recover from that. We just like to upset teams that maybe sometimes expect to win. Let's not go too quickly to conclusions, and focus and give everything at Stoke on Saturday.
"We'll need another strong performance at Stoke". Everybody played well, so let's just continue.
It's Arsenal's second win in three days, having beat Manchester United by the same scoreline on Sunday.
Arsene Wenger insists he will happily take one for the team and face the Stoke boo-boys when Arsenal visit the bet365 Stadium on Saturday - if it means his side keep in the hunt for the top four.
"We are aware we need to win all our remaining games to be in the race for the Champions League".
Arsenal manager Arsene Wenger feels that teams battling in Europe and domestically will find it hard to win the coveted English Premier League (EPL) title.
"I don't know more than you", Wenger told reporters after the game.
Mattias is ESPN FC's Arsenal correspondent.