2 Justin Hoyte (defender)
3 Andrew Taylor (defender)
4 Gary O'Neil (midfielder)
5 Chris Riggott (defender)
6 Emanuel Pogatetz (defender)
8 Didier Digard (midfielder)
9 Ahmed Mido (striker)
10 Jeremie Aliadiere (striker)
11 Marvin Emnes (striker)
12 Afonso Alves (striker)
14 Robert Huth (defender)
15 Mohamed Shawky (midfielder)
17 Tuncay Sanli (striker)
19 Stewart Downing (midfielder)
20 Julio Arca (midfielder)
21 Ross Turnbull (goalkeeper)
22 Bradley Jones (goalkeeper)
26 Matthew Bates (defender)
28 Adam Johnson (midfielder)
29 Tony McMahon (defender)
31 David Wheater (defender)
32 Jason Steele (goalkeeper)
35 Graeme Owens (midfielder)
36 John Johnson (midfielder)
38 Seb Hines (defender)
39 Rhys Williams (defender)
40 Jonathan Grounds (defender)
41 Josh Walker (midfielder)
42 Tom Craddock (striker)
Defender
Defender
Midfielder
Defender
Birthdate: 1.9.1980 Derby, UK
Signed from: Derby County (31.1.2003)
Boro debut: Liverpool - Boro 8.2.2003
First Boro-goal: Sunderland - Boro (Premiership) 22.2.2003
Defender
Birthdate: 16.1.1983 Steinbock, Austria
Signed from: Bayer Leverkusen (1.7.2005)
Boro debut: Boro - Charlton 28.8.2005
First Boro-goal: Sunderland - Boro (Premiership) 31.1.2006
Midfielder
Birthdate: 12.7.1986 Gisors, France
Signed from: Paris St Germain (4.7.2008)
Boro debut: Boro - Tottenham 16.8.2008
First Boro-goal: Boro - Yeovil (League Cup) 26.8.2008
Striker
Striker
Birthdate: 30.3.1983 Rambouillet, France
Signed from: Arsenal (19.6.2007)
Boro debut: Boro - Blackburn 11.8.2007
First Boro-goal: Manchester United - Boro (Premie League) 27.10.2007
Striker
Birthdate: 27.5.1988 Rotterdam, Netherlands
Signed from: Sparta Rotterdam (4.7.2008)
Boro debut: Boro - Yeovil 26.8.2008
First Boro-goal: Boro - Yeovil (League Cup) 26.8.2008
Striker
Birthdate: 30.1.1981, Belo Horizonte, Brazil
Signed from: Heerenveen (31.1.2008)
Boro debut: Boro - Fulham 9.2.2007
First Boro-goal: Boro - Manchester United (Premier League) 6.4.2008
Defender
Birthdate: 18.8.1984 Berlin, Germany
Signed from: Chelsea (31.8.2006)
Boro debut: Boro - Notts County 20.9.2006
First Boro-goal: Tottenham - Boro (Premiership) 5.12.2006
Midfielder
Striker
Birthdate: 16.10.1982, Sakarya, Turkey
Signed from: Fenerbache (22.6.2007)
Boro debut: Boro - Blackburn 11.8.2007
First Boro-goal: Reading - Boro (Premier League) 1.12.2007
Midfielder
Midfielder
Birthdate: 31.1.1981 Quilmes, Argentina
Signed from: Sunderland (26.7.2006)
Boro debut: Reading - Boro 19.8.2006
First Boro-goal: Boro - Charlton (Premiership) 23.12.2006
Goalkeeper
Birthdate: 4.1.1985 Bishop Auckland, UK
Signed from: Boro youth
Boro debut: Bolton - Boro 3.5.2006
Goalkeeper
Birthdate: 19.3.1982 Armadale, Australia
Signed from: Boro youth (1.8.2000)
Boro debut: Boro - Notts County 3.1.2004
Defender
Birthdate: 10.12.1986 Stockton, UK
Signed from: Boro youth (January 2005)
Boro debut: Boro - Manchester City 6.12.2004
Midfielder
Birthdate: 14.7.1987 Sunderland, UK
Signed from: Boro Youth
Boro debut: Sporting Lisbon - Boro 5.3.2005
First Boro-goal: Bolton - Boro (Prermiership) 3.5.2006
Defender
Birthdate: 24.3.1986 Bishop Auckland, UK
Signed from: Boro youth (2003)
Boro debut: Manchester United - Boro 3.10.2004
On loan for one month to Sheffield Wednesday from 21st August 2008
Defender
Birthdate: 14.2.1987 Redcar, UK
Signed from: Boro youth
Boro debut: Banik Ostrava - Boro 30.9.2004
First Boro-goal: Boro - Fulham (Premiership) 13.5.2007
Midfielder
Birthdate: 11.9.1986 Stockton, UK
Signed from: Boro Youth
Boro debut: Boro - Fulham 19.4.2005
Midfielder
Defender
Defender
Defender
Birthdate: 1.1.1988 Thornaby, UK
Signed from: Boro Youth
Boro debut: Boro - Liverpool 12.1.2008
On loan to Norwich City for three months from 1st September 2008