Chelsea Games Refereed by Lee Mason
List of all competitive Chelsea matches refereed by Lee Mason (Lancashire)
| Comp | Date | Home | Away | Chelsea Cards | Opposition Cards | |||
| F.A. Cup | 6th Jan 2007 | Chelsea | 6 | 1 | Macclesfield Town |  |  |  |
| League | 7th Feb 2009 | Chelsea | 0 | 0 | Hull City |  | | |
| League | 21st Nov 2009 | Chelsea | 4 | 0 | Wolverhampton Wanderers | | | |
| League | 24th Mar 2010 | Portsmouth | 0 | 5 | Chelsea | | | |
| League | 16th Oct 2010 | Aston Villa | 0 | 0 | Chelsea | | | |
| League | 2nd Jan 2011 | Chelsea | 3 | 3 | Aston Villa | | | |
| League | 15th May 2011 | Chelsea | 2 | 2 | Newcastle United | | | |
| League | 20th Aug 2011 | Chelsea | 2 | 1 | West Bromwich Albion | | | |
| League Cup | 26th Oct 2011 | Everton | 1 | 2 | Chelsea | | | |
| League | 26th Nov 2011 | Chelsea | 3 | 0 | Wolverhampton Wanderers | | | |
| League | 31st Mar 2012 | Aston Villa | 2 | 4 | Chelsea | | | |
| League | 13th May 2012 | Chelsea | 2 | 1 | Blackburn Rovers | | | |
| League | 22nd Aug 2012 | Chelsea | 4 | 2 | Reading | | | |
| League Cup | 31st Oct 2012 | Chelsea | 5 | 4 | Manchester United | | | |
| League | 2nd Jan 2013 | Chelsea | 0 | 1 | Queens Park Rangers |  | | |
| League | 11th May 2013 | Aston Villa | 1 | 2 | Chelsea | | | |
| League | 2nd Nov 2013 | Newcastle United | 2 | 0 | Chelsea | | | |
| League | 29th Mar 2014 | Crystal Palace | 1 | 0 | Chelsea | | | |
| League | 23rd Aug 2014 | Chelsea | 2 | 0 | Leicester City | | | |
| League | 22nd Nov 2014 | Chelsea | 2 | 0 | West Bromwich Albion | | | |
| League | 24th May 2015 | Chelsea | 3 | 1 | Sunderland | | | |
| League Cup | 23rd Sep 2015 | Walsall | 1 | 4 | Chelsea | | | |
| League | 1st Mar 2016 | Norwich City | 1 | 2 | Chelsea | | | |
| League | 25th Apr 2017 | Chelsea | 4 | 2 | Southampton | | | |
| League | 15th May 2017 | Chelsea | 4 | 3 | Watford | | | |
| League | 9th Sep 2017 | Leicester City | 1 | 2 | Chelsea | | | |
| League Cup | 20th Dec 2017 | Chelsea | 2 | 1 | Bournemouth | | | |
| League | 12th Feb 2018 | Chelsea | 3 | 0 | West Bromwich Albion | | | |
| League | 9th May 2018 | Chelsea | 1 | 1 | Huddersfield Town | | | |
| League | 1st Sep 2018 | Chelsea | 2 | 0 | Bournemouth | | | |
| League | 1st Feb 2020 | Leicester City | 2 | 2 | Chelsea | | | |
| League Cup | 29th Sep 2020 | Tottenham Hotspur | 1 | 1 | Chelsea | | | |
In matches refereed by Lee Mason, Chelsea have the following record:
| Played | Won | Drawn | Lost | |
| Home | 20 | 15 | 4 | 1 |
| Away | 12 | 7 | 3 | 2 |
| Total | 32 | 22 | 7 | 3 |
In matches refereed by Lee Mason, the referee issued the following number of cards:
54 Chelsea & 73 opposition 2 Chelsea & 5 opposition
