Career as a coach
| Period | Team | Country | Position | |
|---|---|---|---|---|
| 07/2018 - 06/2019 |  | Chelsea FC |  England | Ass. Coach |
| 12/2016 - 04/2017 |  | Birmingham City | England | Manager |
| 07/2015 - 06/2016 |  | Al Arabi |  Qatar | Manager |
| 12/2014 - 03/2015 |  | Cagliari Calcio |  Italy | Manager |
| 07/2012 - 12/2013 |  | Watford FC | England | Manager |
| 09/2008 - 05/2010 |  | West Ham United | England | Manager |
Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 07/2006 - 01/2007 |  | Marconi Stallions |  Australia | Forward | |
| 07/2005 - 06/2006 |  | APIA Leichhardt FC | Australia | Forward | |
| 07/2003 - 06/2005 | | Cagliari Calcio | Italy | Forward | 10 |
| 11/1996 - 06/2003 | | Chelsea FC | England | Forward | 25 |
| 07/1995 - 11/1996 |  | Parma Calcio 1913 | Italy | Forward | 10 |
| 07/1993 - 06/1995 | | Parma Calcio 1913 | Italy | Forward | |
| 07/1989 - 06/1993 |  | SSC Napoli | Italy | Forward | |
| 07/1986 - 06/1989 |  | SEF Torres 1903 | Italy | Forward | |
| 07/1984 - 06/1986 |  | Nuorese Calcio | Italy | Forward |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Champions League | 16 | 15 | 1 | 7 | 1.301 | 3 | - | - | 2 | - | - | » All matches |
| Champions League Qual. | 1 | 1 | - | 1 | 65 | - | - | - | - | - | - | » All matches |
| Europa League | 28 | 26 | 2 | 9 | 2.298 | 6 | 1 | - | - | - | - | » All matches |
| UEFA Super Cup | 3 | 3 | - | 2 | 277 | - | - | - | - | - | - | » All matches |
| Cup Winners Cup | 27 | 24 | 3 | 11 | 2.053 | 8 | - | - | - | - | - | » All matches |
| Premier League | 229 | 185 | 44 | 79 | 16.129 | 59 | 1 | 42 | 5 | - | - | » All matches |
| FA Cup | 31 | 28 | 3 | 11 | 2.351 | 11 | 1 | - | 1 | - | - | » All matches |
| League Cup | 13 | 10 | 3 | 3 | 956 | 1 | - | - | - | - | - | » All matches |
| FA Community Shield | 2 | 2 | - | 1 | 194 | - | - | - | - | - | - | » All matches |
| Serie A | 238 | 220 | 18 | 58 | 19.044 | 90 | 13 | - | 6 | - | - | » All matches |
| Serie B | 43 | 42 | 1 | 22 | 3.435 | 13 | 5 | - | - | - | - | » All matches |
| Coppa Italia | 45 | 38 | 7 | 7 | 3.514 | 15 | 2 | - | 1 | - | - | » All matches |
| Supercoppa | 1 | 1 | - | - | 90 | - | - | - | - | - | - | » All matches |
| Total | 677 | 595 | 82 | 211 | 51.707 | 206 | 23 | - | 15 | - | - |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | World Cup | 1 | - | 1 | - | 11 | - | - | - | - | - | 1 | » All matches |
| WC Qualifiers Europe | 9 | 6 | 3 | 4 | 561 | 2 | - | - | - | - | - | » All matches |
| Friendlies | 11 | 8 | 3 | 4 | 762 | 1 | - | - | - | - | - | » All matches |
| EURO | 3 | 2 | 1 | - | 198 | - | - | 1 | - | - | - | » All matches |
| EURO Qualifiers | 11 | 10 | 1 | 4 | 775 | 7 | - | - | 1 | - | - | » All matches |
| Total | 35 | 26 | 9 | 12 | 2.307 | 10 | - | - | 1 | - | 1 |