Arsenal's David Ospina, Nacho Monreal and Granit Xhaka look dejected after Bayern Munich's Arjen Robben scores their second goal on March 7, 2017
A closer look at Arsenal's previous Champions League last-16 failures
Ahead of Arsenal's Champions League last-16 first leg with Porto, Sports Mole looks at the Gunners' recent failures to progress past this stage of Europe's top tournament.
Feb 21, 12:15
 Samir Nasri pictured in action for Arsenal in August 2011
Samir Nasri: 'Arsenal were robbed against Barcelona in Champions League'
Ex-Arsenal attacker Samir Nasri claims that the Gunners were "robbed" in their 2010-11 Champions League last-16 defeat to Barcelona.
Apr 11, 07:44
 General view of a big screen after a goal scored by England's Jesse Lingard is disallowed following a VAR referral
Referees chief Massimo Busacca admits VAR will "never be perfect"
There has been much debate over interpretation of the new laws.
Jun 26, 18:34
 A general shot of a Premier League football ahead of the Premier League clash between Everton and West Ham United at Goodison Park on October 30, 2016
FIFA dismisses referee leniency claims
FIFA denies claims that referees at the World Cup have been told to be lenient in order to make matches more entertaining.
Jul 7, 17:53