They still require their rivals to slip up if they are to qualify for the Champions League for a 20th successive season but have now closed in to within three points of Manchester City and four of Liverpool, with a game in hand on the Reds.
"That's Alexis", Wenger said.
"It was tough in the first half but then we found the opening goal and settled into the game".
"The whole team was dynamic, focused and showed a convincing desire to win the game", Arsenal manager Arsene Wenger told the BBC.
Arsenal travel to Stoke City on Saturday and could move four points clear of fellow top four contenders Manchester United, who face second-placed Tottenham Hotspur on Sunday. Just not enough. All the games the same thing... we saw our games since the beginning of the season, many games where we've had the same feeling.
Alex Oxlade-Chamberlain suffered a suspected hamstring injury against Southampton, though Wenger said following the game that it looked like a "tight" injury rather than a more serious problem.
"We are aware of the fact that we probably need to win all of our remaining games to be sure that we will be in the race until the last minute".
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Tapper asked, reminding viewers that Trump once promised neither he nor people he "deals with" have ties to Russian Federation . CNN learned of the subpoenas hours before President Donald Trump fired Federal Bureau of Investigation director James Comey.
Arsenal have won four of their last five league matches.
Wenger confirmed Hector Bellerin will replace Oxlade-Chamberlain if the England man is not fit to travel to Stoke and praised the Spain international's mentality after he was recently jeered by Gunners fans following a gutless defeat at Crystal Palace last month.
Gabbiadini then sent a contentious free-kick wide of Cech's goal before Arsenal's skipper for the night had to be at this best to tip a Nathan Redmond drive over the bar.
Sanchez had been quiet, but with 15 minutes on the clock in the second period he made the breakthrough.
Sanchez collected a pass from Mesut Ozil and sent two defenders sprawling to the ground before switching directions and slotting a composed left-footed finish past Fraser Forster.
Not since the Invincibles prevailed here in late 2003 had Wenger overseen a win in this fixture, for all that his team had put a Southampton second-string to the sword in the FA Cup earlier this year. He has been under pressure for 30 to 35 years now and was managing big clubs with big pressure, " the former Cameroon right-back said. "Every time it was interesting, I think, the play".
"For me, we deserved a minimum a draw and maybe a win".
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