World Number Ones
Until November 2011 the official ranking system was the CGS Grade. In November 2011 this was replaced by the Dynamic Grade.
In 1995 the smoothing algorithm used to produce the grade from the index was altered to make it less volatile and so only number ones since 1995 are listed.
The Dynamic Grade list shows what would have happened if the DG system had been in place since 1991.
Changes are only considered at the end of an event.
Official World Number One (CGS to Nov 2011; DG since)
June 1995 David Maugham
Sep 1995 Reg Bamford
July 1996 Robert Fulford
June 1997 Reg Bamford
Sep 1997 Chris Clarke
Nov 1997 Robert Fulford
Sep 2000 Reg Bamford
May 2001 Robert Fulford
July 2001 Reg Bamford
Aug 2003 Robert Fulford
Jan 2004 Reg Bamford
Apr 2004 Robert Fulford
July 2005 David Maugham
July 2005 Chris Clarke
July 2005 David Maugham
Aug 2005 Robert Fulford
Jan 2006 David Maugham
Apr 2006 Robert Fulford
May 2006 Reg Bamford
July 2006 Robert Fulford
Nov 2006 Reg Bamford
July 2007 Robert Fulford
Sep 2007 Reg Bamford
Feb 2008 Chris Clarke
Jan 2011 Reg Bamford (Clarke had not played 10 games in previous 12 months)
Nov 2012 Chris Clarke
Mar 2013 Robert Fletcher
Aug 2013 Reg Bamford
Aug 2013 Robert Fletcher
Nov 2013 Chris Clarke
Jan 2014 Robert Fletcher
Mar 2014 Chris Clarke
Sep 2014 Robert Fletcher
Nov 2015 Robert Fulford
Jan 2016 Robert Fletcher
Jan 2019 Reg Bamford (Fletcher had not played 10 games in previous 12 months)
Feb 2019 Robert Fulford (Bamford had not played 10 games in previous 12 months)
Jul 2019 Reg Bamford
Feb 2020 Robert Fletcher
Dynamic Grade Number One
29 Sep 1991 Robert Fulford
17 May 1992 Chris Clarke
31 May 1992 Robert Fulford
28 June 1992 Chris Clarke
17 July 1992 Robert Fulford
09 Oct 1993 David Maugham
02 May 1994 Reg Bamford
21 May 1995 David Maugham
17 June 1995 Chris Clarke
25 June 1995 David Maugham
17 July 1995 Robert Fulford
06 Aug 1995 David Maugham
28 Aug 1995 Robert Fulford
08 Oct 1995 Reg Bamford
04 July 1996 Robert Fulford
05 May 1997 Reg Bamford
08 June 1997 David Maugham
15 June 1997 Robert Fulford
29 June 1997 Reg Bamford
13 July 1997 Robert Fulford
04 May 1998 David Maugham
17 May 1998 Robert Fulford
17 Sep 2000 Reg Bamford
08 Apr 2001 Robert Fulford
16 Apr 2001 Reg Bamford
07 May 2001 Robert Fulford
08 July 2001 Reg Bamford
13 July 2003 Robert Fulford
26 June 2005 David Maugham
02 July 2005 Robert Fulford
11 July 2005 David Maugham
14 Aug 2005 Reg Bamford
11 June 2006 Robert Fulford
12 Nov 2006 Reg Bamford
03 Dec 2006 Robert Fulford
07 May 2007 Reg Bamford
24 June 2007 Chris Clarke
15 July 2007 Robert Fulford
27 Aug 2007 Reg Bamford
20 Jan 2008 Chris Clarke
07 Sep 2008 Robert Fulford
09 Nov 2008 Chris Clarke
26 Apr 2009 Robert Fulford
17 May 2009 Reg Bamford
21 June 2009 Robert Fulford
12 July 2009 Chris Clarke
24 Jan 2011 Reg Bamford
18 Nov 2012 Chris Clarke
19 Mar 2013 Robert Fletcher
05 Aug 2013 Reg Bamford
18 Aug 2013 Robert Fletcher
24 Nov 2013 Chris Clarke
09 Jan 2014 Robert Fletcher
23 Mar 2014 Chris Clarke
21 Sep 2014 Robert Fletcher
22 Nov 2015 Robert Fulford
02 Jan 2016 Robert Fletcher
01 Jan 2019 Reg Bamford (Fletcher had not played 10 games in previous 12 months)
12 Feb 2019 Robert Fulford (Bamford had not played 10 games in previous 12 months)
05 Jul 2019 Reg Bamford
23 Feb 2020 Robert Fletcher
Time at DG number one (to 31 Dec 2022)
Robert Fulford 3673 days (longest 854)
Reg Bamford 3162 days (longest 735)
Robert Fletcher 2874 days (longest 1095)
Chris Clarke 1371 days (longest 561)
David Maugham 336 days (longest 205)