Alex Oxlade-Chamberlain (R) of Arsenal competes during the 2016-2017 Premier League match between Arsenal and Southampton at the Emirates Stadium in London, Britain on Sept. 10, 2016. (Xinhua/Han Yan)
Laurent Koscielny of Arsenal celebrates after scoring during the 2016-2017 Premier League match between Arsenal and Southampton at the Emirates Stadium in London, Britain on Sept. 10, 2016. (Xinhua/Han Yan)
Alex Oxlade-Chamberlain of Arsenal vies for the ball during the 2016-2017 Premier League match between Arsenal and Southampton at the Emirates Stadium in London, Britain on Sept. 10, 2016. (Xinhua/Han Yan)
Laurent Koscielny of Arsenal shoots to score during the 2016-2017 Premier League match between Arsenal and Southampton at the Emirates Stadium in London, Britain on Sept. 10, 2016. (Xinhua/Han Yan)
Supporters for Southampton celebrate after scoring during the 2016-2017 Premier League match between Arsenal and Southampton at the Emirates Stadium in London, Britain on Sept. 10, 2016. (Xinhua/Han Yan)
Jose Fonte (R) of Southampton fights for the ball during the 2016-2017 Premier League match between Arsenal and Southampton at the Emirates Stadium in London, Britain on Sept. 10, 2016. (Xinhua/Han Yan)
Alex Oxlade-Chamberlain (R) of Arsenal vies for the ball during the 2016-2017 Premier League match between Arsenal and Southampton at the Emirates Stadium in London, Britain on Sept. 10, 2016. (Xinhua/Han Yan)
Jose Fonte (R) of Southampton fights for a header during the 2016-2017 Premier League match between Arsenal and Southampton at the Emirates Stadium in London, Britain on Sept. 10, 2016. (Xinhua/Han Yan)
