All the key numbers behind an illustrious U's career.
Fans have flocked to give their comments and you can read your fellow supporters' views U's midfielder Karl Duguid has sparked floods of praise after announcing he is to retire from professional football at the end of this season, aged 36.
U's historian and statistician Graeson Laitt takes a look at the facts and figures behind Doogie's career.
Full name: Karl Anthony Duguid
Date of birth: 21st March 1978
Born: Letchworth, Hertfordshire
First Spell with the club (1995-2008)
Debut: 9th December 1995 vs Hereford United (a) 1-1 aged 17yrs 263 days - replacing Steve Ball.
Full debut: 24th February 1996 vs Darlington (h) 1-1 aged 17yrs 340 days
Home debut: 13th January 1996 vs Barnet (h) 3-2 aged 17yrs 298 days
First goal: 1st January 1996 vs Torquay United (a) 3-2 aged 17yrs 286 days – replaced Tony Dennis as a substitute before scoring the equaliser in the 77th minute.
First home goal: 12th October 1996 vs Wigan Athletic (h) 3-1 aged 18yrs 205 days.
Last goal: 10th February 2007 vs Barnsley (a) 3-0 aged 28yrs 317 days.
Final game: 4th May 2008 vs Scunthorpe United (a) 3-3 aged 30yrs, 44 days.
Second Spell with the club (2011-2014)
Debut: 3rd September 2011 vs Scunthorpe United (a) 1-1 aged 33yrs 166 days
Full debut: 10th September 2011 vs Leyton Orient (h) 1-1 aged 33yrs 173 days
Home debut: 10th September 2011 vs Leyton Orient (h) 1-1 aged 33yrs 173 days
First goal: 10th December 2011 vs Bury (h) 4-1 aged 33yrs 264 days
Last goal: 31st March 2012 vs Exeter City (a) 1-1 aged 34yrs 10 days
Final game: 27th October 2012 vs Shrewsbury Town (a) 2-2 aged 34yrs 220 days
League One Runner-up 2005/2006 (35 apps / 0 goals)
Division Three Play-off Winner 1997/1998
Autoglass Windscreens Shield Runner-up 1996-97
Colchester United Player of the Season 2001/2002
Appearances & Goals Data
Total Appearances: 590 (FL 524, FA Cup 28, League Cup 18, Other 20
Goals: 51 (FL 47, FA Cup 3, League Cup 0, Other 1)
Colchester United Appearances: 470 (FL 336 starts + 78 subs, FA Cup 17+7, LC 10+4, Other 13+5)
Goals: 48 (FL 45, FA Cup 2, LC 0, Other 1)
Unused substitute on 52 occasions.
Plymouth Argyle Appearances: 115 (FL 98+9, FA Cup 4, LC 3, Other 1)
Goals: 3(FL 2, FA Cup 1)
Penalties (Colu only): scored 26th October 1996 vs Lincoln City (a) 2-3
missed in shoot-out 20th April 1997 vs Carlisle United (Autoglass Windscreens Shield Final) 0-0 (lost on pens)
missed in shoot-out 27th November 2001 vs York City (FA Cup Rd 1 Replay) 2-2 (lost 3-2)
Yellow cards: 54
Red Cards: vs Chesterfield (19/1/2002) vs Blackpool (25/01/2003), vs Queens Park Rangers (28/12/2003), vs Barnsley (10/01/2004)
Karl is 6th in the all-time appearance list on 470 games – two behind Kem Izzet in 5th, and with eighteen more than Peter Wright.
Karl is 7th in the all-time Football League appearance list on 414 games – one behind John Fowler, and seventeen games above Percy Ames.
Karl is 6th in the all-time FA Cup appearance list for the club on 24 games – two behind both Mick Packer and Steve Wignall, and one above Brian Hall.
Karl is 9th in the all-time League Cup appearance list for the club on fourteen appearances. – one behind Kem Izzet and Bobby Gough, and one more than Brian Hall, Joe Keith, McDonough and Richard Wilkins
Karl is joint 3rd in the all-time Football League Trophy appearance list with Kem Izzet and Richard Wilkins – three behind Tony Adcock, and eight behind Tony English.
Record substitute appearance maker for the club in all competitions with 94. Tony Lock is next with 71.
Karl has scored 48 goals in all competitions. This currently puts him 20th in the all-time list level with Keith Bowen and Johnny McKim. It now means that Jabo Ibehre and
Freddie Sears are the leading goal scorers in the club with sixteen goals apiece in all competitions.
With 45 goals in the Football League, he is joint twelfth on the list with Johnny McKim.
Managers he played under:
Colchester United: Joe Dunne, Phil Parkinson, Mick Wadsworth, John Ward, Steve Whitton, Steve Wignall and Geraint Williams
Plymouth Argyle: Paul Mariner, Peter Reid, Paul Sturrock