Career as a coach
| Period | Team | Country | Position | |
|---|---|---|---|---|
| 04/2013 - 09/2013 |  | Sunderland AFC |  England | Manager |
| 07/2011 - 02/2013 |  | Swindon Town | England | Manager |
Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 07/2006 - 06/2008 |  | Atletico Roma |  Italy | Forward | |
| 07/2004 - 06/2006 |  | Lazio Roma | Italy | Forward | 9 |
| 07/2003 - 06/2004 |  | Charlton Athletic | England | Forward | 11 |
| 01/1999 - 06/2003 |  | West Ham United | England | Forward | 10 |
| 07/1997 - 12/1998 |  | Sheffield Wednesday | England | Forward | 11 |
| 07/1996 - 06/1997 |  | Celtic FC |  Scotland | Forward | |
| 07/1995 - 06/1996 |  | AC Milan | Italy | Forward | 7 |
| 07/1994 - 06/1995 | | AC Milan | Italy | Forward | |
| 07/1993 - 06/1994 |  | SSC Napoli | Italy | Forward | |
| 07/1990 - 06/1993 |  | Juventus | Italy | Forward | |
| 07/1987 - 06/1990 | | Lazio Roma | Italy | Forward | |
| 07/1986 - 06/1987 |  | Ternana Calcio | Italy | Forward | |
| 07/1985 - 06/1986 | | Lazio Roma | Italy | Forward |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Europa League | 28 | 15 | 13 | 8 | 1.481 | 2 | - | - | 4 | - | - | » All matches |
| Europa League Qual. | 1 | - | 1 | - | 38 | - | - | - | - | - | - | » All matches |
| UEFA Super Cup | 2 | - | 2 | - | 13 | - | - | - | - | - | - | » All matches |
| Cup Winners Cup | 5 | 2 | 3 | - | 248 | - | - | - | - | - | - | » All matches |
| UI-Cup | 10 | 10 | - | 8 | 754 | 2 | - | - | 1 | - | - | » All matches |
| Premier League | 190 | 176 | 14 | 46 | 15.553 | 66 | 15 | 49 | 30 | - | 2 | » All matches |
| FA Cup | 9 | 8 | 1 | 2 | 672 | 1 | - | - | - | - | 1 | » All matches |
| League Cup | 12 | 12 | - | - | 1.170 | 4 | - | - | 4 | - | - | » All matches |
| Serie A | 246 | 159 | 87 | 71 | 14.471 | 32 | 4 | - | 25 | 1 | 3 | » All matches |
| Coppa Italia | 38 | 26 | 12 | 15 | 2.308 | 4 | - | - | 3 | - | 1 | » All matches |
| Supercoppa | 1 | - | 1 | - | 35 | - | - | - | - | - | - | » All matches |
| Premiership | 26 | 25 | 1 | 7 | 2.121 | 12 | 2 | - | 6 | - | 1 | » All matches |
| Total | 568 | 433 | 135 | 157 | 38.864 | 123 | 21 | - | 73 | 1 | 8 |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | U21 Friendlies | 6 | 6 | - | 2 | 509 | 2 | - | - | - | - | - | » All matches |
| U21 EURO | 1 | 1 | - | - | 90 | - | - | - | - | - | - | » All matches |
| U21 EURO Qualifiers | 2 | 2 | - | 1 | 156 | - | - | - | 1 | - | - | » All matches |
| Total | 9 | 9 | - | 3 | 755 | 2 | - | - | 1 | - | - |