Statistics show that Chelsea managers have great records at keeping clean sheets, with five Blues bosses among the top ten with best clean sheets records in Premier League history, but where does current chief Jose Mourinho rank against Manchester United legend Sir Alex Ferguson?
10) Kenny Dalglish
With spells at Liverpool, Blackburn Rovers and Newcastle United, Kenny Dalglish has 90 clean sheets in 238 Premier League games in total, giving him a record of 37.8% in terms of shut-outs in his time as a manager at this level.
9) Arsene Wenger
Only ninth! Arsenal have not been known for their defensive prowess under Arsene Wenger, having kept just 277 clean sheets out of 708 games under the Frenchman, a record of 39.1%.