what is the total number of "df" positions on the list?
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col : no. | name | position | date of birth (age) | signed from | notes row 1 : 2 | darwin torres | df | february 16, 1991 (age 23) | the academy | reserve team player row 2 : 3 | jadson viera | df | august 4, 1981 (age 32) | vasco da gama | auf player row 3 : 4 | christian núñez | df | september 24, 1982 (age 31) | cerro |  row 4 : 8 | matías cabrera | mf | may 16, 1986 (age 28) | cerro |  row 5 : 9 | alexander medina | fw | august 8, 1978 (age 35) | river plate | captain row 6 : 10 | tabaré viudez | fw | september 8, 1989 (age 24) | necaxa |  row 7 : 11 | vicente sánchez | fw | december 7, 1979 (age 34) | américa | in on 15 january 2012 row 8 : 14 | diego placente | df | april 24, 1977 (age 37) | san lorenzo |  row 9 : 15 | gonzalo bueno | fw | september 1, 1991 (age 22) | the academy |  row 10 : 16 | mathías abero | df | april 9, 1990 (age 24) | racing |  row 11 : 17 | maximiliano calzada | mf | april 21, 1990 (age 24) | the academy |  row 12 : 18 | israel damonte | mf | january 6, 1982 (age 32) | godoy cruz | in on 19 january 2012 row 13 : 19 | andrés scotti | df | december 14, 1975 (age 38) | colo-colo | in on 3 january 2012 row 14 : 22 | joaquín boghossian | fw | june 19, 1987 (age 27) | red bull salzburg |  row 15 : 24 | marcos aguirre | mf | march 30, 1984 (age 30) | san martín (san juan) | in on 12 january 2012 row 16 : – | rodrigo muñoz | gk | january 22, 1982 (age 32) | cerro | out on 10 january 2012 row 17 : – | diego barboza | df | january 9, 1991 (age 23) | the academy | reserve team player row 18 : – | sebastián coates | df | october 7, 1990 (age 23) | the academy | out on 26 august 2011 row 19 : – | gabriel marques | df | march 31, 1983 (age 31) | river plate | out on 29 december 2011 row 20 : – | gonzalo godoy | df | january 17, 1988 (age 26) | cerro | out on 5 january 2012 row 21 : – | sebastián gorga | df | april 6, 1994 (age 20) | the academy | reserve team player row 22 : – | fernando poclaba | df | january 23, 1990 (age 24) | racing | out on 31 december 2012 row 23 : – | agustín tabárez | df | october 15, 1994 (age 19) | the academy | reserve team player row 24 : – | anderson silva | mf | august 28, 1982 (age 31) | barnsley | end of contract on 31 december 2011 row 25 : – | ayrton bone | mf | may 27, 1994 (age 20) | the academy | reserve team player row 26 : – | carlos de pena | mf | march 11, 1992 (age 22) | the academy | reserve team player row 27 : – | hugo dorrego | mf | may 9, 1993 (age 21) | the academy | reserve team player row 28 : – | gastón pereiro | mf | june 11, 1995 (age 19) | the academy | reserve team player row 29 : – | santiago saúl | mf | january 8, 1993 (age 21) | the academy | reserve team player row 30 : – | leandro barcia | fw | october 8, 1993 (age 20) | the academy | reserve team player row 31 : – | lucas cavallini | fw | december 28, 1992 (age 21) | the academy | reserve team player row 32 : – | renato césar | fw | april 8, 1993 (age 20) | the academy |
what is the total number of "df" positions on the list?
No. Name Position Date of Birth (Age) Signed from Notes
1 Leonardo Burián GK January 21, 1984 (age 30) Bella Vista First team goalkeeper
2 Darwin Torres DF February 16, 1991 (age 23) The Academy Reserve team player
3 Jadson Viera DF August 4, 1981 (age 32) Vasco da Gama AUF player
4 Christian Núñez DF September 24, 1982 (age 31) Cerro
5 Santiago Romero MF February 15, 1990 (age 24) The Academy Reserve team player
6 Alexis Rolín DF March 2, 1989 (age 25) The Academy
7 Rafael García MF January 6, 1989 (age 25) Rampla Juniors
8 Matías Cabrera MF May 16, 1986 (age 28) Cerro
9 Alexander Medina FW August 8, 1978 (age 35) River Plate Captain
10 Tabaré Viudez FW September 8, 1989 (age 24) Necaxa
11 Vicente Sánchez FW December 7, 1979 (age 34) América In on 15 January 2012
12 Martín Tejera GK February 16, 1991 (age 23) The Academy
13 Pablo Álvarez DF February 7, 1985 (age 29) Panserraikos In on 3 January 2012
14 Diego Placente DF April 24, 1977 (age 37) San Lorenzo
15 Gonzalo Bueno FW September 1, 1991 (age 22) The Academy
16 Mathías Abero DF April 9, 1990 (age 24) Racing
17 Maximiliano Calzada MF April 21, 1990 (age 24) The Academy
18 Israel Damonte MF January 6, 1982 (age 32) Godoy Cruz In on 19 January 2012
19 Andrés Scotti DF December 14, 1975 (age 38) Colo-Colo In on 3 January 2012
20 Álvaro Recoba MF March 17, 1976 (age 38) Danubio Vice-captain
21 Matías Vecino MF August 24, 1991 (age 22) Central Español
22 Joaquín Boghossian FW June 19, 1987 (age 27) Red Bull Salzburg
23 Facundo Píriz MF March 27, 1990 (age 24) The Academy
24 Marcos Aguirre MF March 30, 1984 (age 30) San Martín (San Juan) In on 12 January 2012
25 Jorge Bava GK January 22, 1982 (age 32) Cerro In on 13 January 2012
– Rodrigo Muñoz GK January 22, 1982 (age 32) Cerro Out on 10 January 2012
– Diego Barboza DF January 9, 1991 (age 23) The Academy Reserve team player
– Sebastián Coates DF October 7, 1990 (age 23) The Academy Out on 26 August 2011
– Gabriel Marques DF March 31, 1983 (age 31) River Plate Out on 29 December 2011
– Gonzalo Godoy DF January 17, 1988 (age 26) Cerro Out on 5 January 2012
– Sebastián Gorga DF April 6, 1994 (age 20) The Academy Reserve team player
– Maximiliano Moreira DF June 11, 1994 (age 20) The Academy Reserve team player
– Nicolás Olivera DF February 17, 1993 (age 21) The Academy Reserve team player
– Fernando Poclaba DF January 23, 1990 (age 24) Racing Out on 31 December 2012
– Agustín Tabárez DF October 15, 1994 (age 19) The Academy Reserve team player
– Anderson Silva MF August 28, 1982 (age 31) Barnsley End of contract on 31 December 2011
– Ayrton Bone MF May 27, 1994 (age 20) The Academy Reserve team player
– Carlos De Pena MF March 11, 1992 (age 22) The Academy Reserve team player
– Hugo Dorrego MF May 9, 1993 (age 21) The Academy Reserve team player
– Damián Eroza MF March 22, 1993 (age 21) The Academy Reserve team player
– Horacio Peralta MF June 3, 1982 (age 32) Central Español End of contract on 31 December 2011
– Gastón Pereiro MF June 11, 1995 (age 19) The Academy Reserve team player
– Santiago Pereyra MF June 2, 1992 (age 22) The Academy Reserve team player
– Santiago Saúl MF January 8, 1993 (age 21) The Academy Reserve team player
– Matías Sosa MF June 26, 1992 (age 21) Sporting de Gijón B End of contract on 31 December 2011
– Gonzalo Vega MF June 29, 1992 (age 21) The Academy Reserve team player
– Leandro Barcia FW October 8, 1993 (age 20) The Academy Reserve team player
– Lucas Cavallini FW December 28, 1992 (age 21) The Academy Reserve team player
– Renato César FW April 8, 1993 (age 20) The Academy
– Jonathan Charquero FW February 21, 1989 (age 25) Montevideo Wanderers Out on 27 December 2011
– Sergio Cortelezzi FW September 9, 1994 (age 19) The Academy Reserve team player
– Richard Porta FW January 8, 1985 (age 29) Al Wasl Out on 14 October 2011\nIn on 9 January, 2012
– Nicolás López FW September 9, 1993 (age 20) The Academy On 22 August 2011 he escaped with his representant\nPablo Bentancur and his family to Italy
– Renzo López FW April 16, 1994 (age 20) The Academy Reserve team player
– Juan Cruz Mascia FW January 3, 1994 (age 20) Miramar Misiones In on 19 January 2012
– Rodrigo Roque FW May 3, 1991 (age 23) The Academy Reserve team player
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