In 2006, when Chelsea signed defender Khalid Boulahrouz from Hamburg, he wore the number previously worn by Hernan Crespo – No. 9. The Number 9, traditionally associated with strikers, was given to him because it was not allocated to any player by Chelsea at the time of signing. A defender wearing a predominantly strikers number is definitely a sign of the changing times. Today’s unconventionality is tomorrow’s norm. Stir that into your Chelsea F.C. Jumbo Mug TG next time you drink from it.