Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 12/2016 - 06/2017 |  | Estudiantes |  Argentina | Midfield | 11 |
| 07/2013 - 06/2014 | | Estudiantes | Argentina | Midfield | 11 |
| 07/2007 - 06/2012 | | Estudiantes | Argentina | Midfield | 11 |
| 07/2006 - 06/2007 | | Estudiantes | Argentina | Midfield | 10 |
| 07/2004 - 06/2006 |  | Inter |  Italy | Midfield | 14 |
| 08/2003 - 06/2004 |  | Chelsea FC |  England | Midfield | 20 |
| 07/2001 - 07/2003 |  | Manchester United | England | Midfield | 4 |
| 07/1999 - 06/2001 |  | Lazio Roma | Italy | Midfield | 23 |
| 07/1998 - 06/1999 |  | Parma Calcio 1913 | Italy | Midfield | 11 |
| 07/1996 - 06/1998 |  | Sampdoria | Italy | Midfield | 20 |
| 03/1996 - 06/1996 |  | Boca Juniors | Argentina | Midfield | 11 |
| 01/1994 - 02/1996 | | Estudiantes | Argentina | Midfield |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Club World Cup | 2 | 2 | - | - | 210 | - | - | - | 1 | - | - | » All matches |
 | Champions League | 60 | 57 | 3 | 21 | 4.808 | 7 | - | 15 | 14 | 1 | - | » All matches |
| Champions League Qual. | 7 | 7 | - | 2 | 600 | - | - | - | 1 | - | - | » All matches |
| Europa League | 12 | 12 | - | 7 | 1.003 | - | - | - | 1 | - | - | » All matches |
| UEFA Super Cup | 1 | 1 | - | - | 90 | - | - | - | 1 | - | - | » All matches |
| Premier League | 58 | 50 | 8 | 17 | 4.299 | 8 | - | 4 | 4 | - | - | » All matches |
| FA Cup | 2 | 2 | - | 1 | 141 | - | - | - | 1 | - | - | » All matches |
| League Cup | 6 | 5 | 1 | - | 476 | - | - | - | 1 | - | - | » All matches |
| Serie A | 189 | 187 | 2 | 63 | 15.724 | 20 | 2 | - | 38 | - | 3 | » All matches |
| Coppa Italia | 22 | 19 | 3 | 9 | 1.527 | 3 | - | - | 1 | - | - | » All matches |
| Supercoppa | 2 | 2 | - | - | 210 | 1 | - | - | 1 | - | - | » All matches |
 | Copa Libertadores | 40 | 39 | 1 | 10 | 3.364 | 4 | 2 | 2 | 13 | - | - | » All matches |
| Copa Sudamericana | 13 | 13 | - | 8 | 1.070 | 1 | - | 1 | 4 | - | - | » All matches |
| Recopa Sudamericana | 2 | 2 | - | - | 180 | - | - | - | - | - | - | » All matches |
| Primera División | 159 | 159 | - | 49 | 13.137 | 20 | 7 | 11 | 50 | 1 | 3 | » All matches |
| Total | 575 | 557 | 18 | 187 | 46.839 | 64 | 11 | - | 131 | 2 | 6 |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| World Cup | 11 | 9 | 2 | 3 | 818 | - | - | 5 | 1 | - | - | » All matches |
| WC Qualifiers South America | 35 | 30 | 5 | 6 | 2.688 | 5 | 1 | - | 3 | 1 | - | » All matches |
| Friendlies | 21 | 20 | 1 | 6 | 1.700 | 3 | 1 | 1 | 1 | - | - | » All matches |
| Copa América | 5 | 5 | - | 5 | 383 | - | - | - | 2 | - | - | » All matches |
| Total | 72 | 64 | 8 | 20 | 5.589 | 8 | 2 | 6 | 7 | 1 | - |
Personal achievements
| Player of the Year | ||
|---|---|---|
 | CONMEBOL | 2008 | 2009 |
| Argentina | 2006 | 2009 (local player) |