This included Manchester United’s Premier League clash with Manchester City at Old Trafford on 10 February 2008, when 1950s style kits were worn as part of the Munich air disaster’s 50th anniversary commemorations. Premier League clubs often used the traditional squad numbering system when competing in domestic or European cups, often when their opponents still made use of the traditional squad numbering system. The use of inverted wingers now sees traditional right wingers, the number 7’s, like Cristiano Ronaldo, on the left, and traditional left wingers, the number 11’s, like Gareth Bale, on the right. This article needs additional citations for verification.