Here are the most remarkable almost-one-club players in football, ranked from least to most dedicated:
Gabby Agbonlahor played for only two teams: Aston Villa (391 appearances) and Watford (2 appearances), with a 97.51% dedication level.
David Narey spent his entire career at Dundee United (865 appearances) and Raith Rovers (21 appearances), with an impressive 97.63% commitment to the club.
Manny Kaltz was a stalwart of Hamburg, playing for the club from 1978 to 1994, with 754 appearances in 16 seasons - a staggering 97.78% dedication level.
Thomas Müller has played almost exclusively for Bayern Munich and its reserve team, with an incredible 804 appearances over nearly two decades, resulting in a 98.38% commitment to the club.
David O'Leary spent his entire career at Arsenal (722 appearances) and Leeds United (10 appearances), with an impressive 98.63% dedication level.
Daniele De Rossi played for Roma from 1999 to 2016 and had just one loan spell at Boca Juniors, totaling 623 appearances in 18 seasons - a remarkable 98.88% commitment to the club.
Rogério Ceni is widely regarded as the most dedicated player of all time, playing for São Paulo from 1990 to 2011 and having just two spells outside of the club, with an astonishing 99.01% commitment level.
Lewis Dunk spent his entire career at Brighton & Hove Albion (509 appearances), including a spell on loan at non-league Bognor Regis, with a remarkable 99.41% dedication to the club.
Tom Finney played for Preston North End from 1946 to 1957 and had just one loan spell abroad, totaling 475 appearances in 11 seasons - a remarkable 99.58% commitment level.
John Ebbrell spent his entire career at Everton (265 appearances) and Sheffield United (1 appearance), with an impressive 99.62% dedication level.
John Atyeo played for Portsmouth and Bristol City, but also had a brief spell on the books of non-league Westbury United, totaling 647 appearances in 14 seasons - a remarkable 99.69% commitment to his clubs.
Steve Death spent nearly two decades at West Ham and Reading, with 538 appearances in 21 seasons - a staggering 99.81% dedication level.
Matt Bloomfield played for Ipswich Town as a trainee before joining Wycombe Wanderers on loan from Wycombe, but also made just one appearance for Ipswich, resulting in an impressive 99.82% commitment to the latter club over his entire career.
Gabby Agbonlahor played for only two teams: Aston Villa (391 appearances) and Watford (2 appearances), with a 97.51% dedication level.
David Narey spent his entire career at Dundee United (865 appearances) and Raith Rovers (21 appearances), with an impressive 97.63% commitment to the club.
Manny Kaltz was a stalwart of Hamburg, playing for the club from 1978 to 1994, with 754 appearances in 16 seasons - a staggering 97.78% dedication level.
Thomas Müller has played almost exclusively for Bayern Munich and its reserve team, with an incredible 804 appearances over nearly two decades, resulting in a 98.38% commitment to the club.
David O'Leary spent his entire career at Arsenal (722 appearances) and Leeds United (10 appearances), with an impressive 98.63% dedication level.
Daniele De Rossi played for Roma from 1999 to 2016 and had just one loan spell at Boca Juniors, totaling 623 appearances in 18 seasons - a remarkable 98.88% commitment to the club.
Rogério Ceni is widely regarded as the most dedicated player of all time, playing for São Paulo from 1990 to 2011 and having just two spells outside of the club, with an astonishing 99.01% commitment level.
Lewis Dunk spent his entire career at Brighton & Hove Albion (509 appearances), including a spell on loan at non-league Bognor Regis, with a remarkable 99.41% dedication to the club.
Tom Finney played for Preston North End from 1946 to 1957 and had just one loan spell abroad, totaling 475 appearances in 11 seasons - a remarkable 99.58% commitment level.
John Ebbrell spent his entire career at Everton (265 appearances) and Sheffield United (1 appearance), with an impressive 99.62% dedication level.
John Atyeo played for Portsmouth and Bristol City, but also had a brief spell on the books of non-league Westbury United, totaling 647 appearances in 14 seasons - a remarkable 99.69% commitment to his clubs.
Steve Death spent nearly two decades at West Ham and Reading, with 538 appearances in 21 seasons - a staggering 99.81% dedication level.
Matt Bloomfield played for Ipswich Town as a trainee before joining Wycombe Wanderers on loan from Wycombe, but also made just one appearance for Ipswich, resulting in an impressive 99.82% commitment to the latter club over his entire career.