| Season | Team | League | GP | G | A | TP | PIM | Playoffs | GP | G | A | TP | PIM | |
| 1988-1989 | GKS Tychy U20 | Poland U20 | - | - | - | - | - | | | ||||||
| GKS Tychy | Poland | - | - | - | - | - | | | |||||||
| Poland U18 | EJC-18 B | 5 | 5 | 6 | 11 | 6 | | | |||||||
| 1989-1990 | GKS Tychy U20 | Poland U20 | 30 | 35 | 11 | 46 | - | | | ||||||
| GKS Tychy | Poland | - | - | - | - | - | | | |||||||
| Poland U18 | EJC-18 | 6 | 9 | 3 | 12 | 14 | | | |||||||
| Poland U20 | WJC-20 | 7 | 1 | 0 | 1 | 4 | | | |||||||
| 1990-1991 | GKS Tychy | Poland | 24 | 25 | 15 | 40 | - | | | ||||||
| Poland U20 | WJC-20 B | 7 | 12 | 3 | 15 | 2 | | | |||||||
| Poland | WC B | 7 | 6 | 2 | 8 | 4 | | | |||||||
| Poland (all) | International | 7 | 6 | 2 | 8 | 4 | | | |||||||
| 1991-1992 | Djurgårdens IF | SHL | 39 | 8 | 5 | 13 | 4 | | | Playoffs | 3 | 0 | 0 | 0 | 2 |
| Poland | OG | 4 | 0 | 0 | 0 | 4 | | | |||||||
| Poland | WC | 6 | 0 | 0 | 0 | 4 | | | |||||||
| Poland (all) | International | 10 | 0 | 0 | 0 | 8 | | | |||||||
| 1992-1993 | Hammarby IF | Division 1 | 32 | 39 | 30 | 69 | 74 | | | Qualification | 13 | 16 | 7 | 23 | 34 |
| 1993-1994 | Djurgårdens IF | SHL | 39 | 13 | 21 | 34 | 20 | | | Playoffs | 6 | 3 | 1 | 4 | 2 |
| Boston Bruins | NHL | 4 | 2 | 1 | 3 | 0 | | | Playoffs | 13 | 3 | 3 | 6 | 4 | |
| 1994-1995 | Kiekko-Espoo | Liiga | 7 | 9 | 3 | 12 | 10 | | | ||||||
| Boston Bruins | NHL | 47 | 12 | 14 | 26 | 31 | | | Playoffs | 5 | 1 | 0 | 1 | 0 | |
| 1995-1996 | Boston Bruins | NHL | 33 | 5 | 6 | 11 | 10 | | | ||||||
| Edmonton Oilers | NHL | 37 | 12 | 17 | 29 | 8 | | | |||||||
| 1996-1997 | Edmonton Oilers | NHL | 76 | 26 | 21 | 47 | 16 | | | Playoffs | 12 | 2 | 1 | 3 | 10 |
| 1997-1998 | New York Islanders | NHL | 68 | 12 | 13 | 25 | 23 | | | ||||||
| Poland | WC B | 3 | 2 | 1 | 3 | 0 | | | |||||||
| Poland (all) | International | 3 | 2 | 1 | 3 | 0 | | | |||||||
| 1998-1999 | New York Islanders | NHL | 78 | 21 | 17 | 38 | 14 | | | ||||||
| 1999-2000 | New York Islanders | NHL | 79 | 35 | 35 | 70 | 34 | | | ||||||
| Poland | WC B | 7 | 4 | 7 | 11 | 2 | | | |||||||
| Poland (all) | International | 7 | 4 | 7 | 11 | 2 | | | |||||||
| 2000-2001 | New York Islanders | NHL | 82 | 30 | 32 | 62 | 48 | | | ||||||
| 2001-2002 | New York Islanders | NHL | 82 | 22 | 29 | 51 | 48 | | | Playoffs | 7 | 2 | 2 | 4 | 4 |
| Poland | WC | 3 | 2 | 2 | 4 | 4 | | | |||||||
| Poland (all) | International | 3 | 2 | 2 | 4 | 4 | | | |||||||
| 2002-2003 | Montréal Canadiens | NHL | 43 | 5 | 9 | 14 | 16 | | | ||||||
| Hamilton Bulldogs | AHL | 20 | 8 | 12 | 20 | 12 | | | Playoffs | 6 | 1 | 3 | 4 | 6 | |
| 2003-2004 | New York Islanders | NHL | 81 | 25 | 24 | 49 | 16 | | | Playoffs | 5 | 0 | 1 | 1 | 0 |
| 2004-2005 | Djurgårdens IF | SHL | 46 | 15 | 9 | 24 | 20 | | | Playoffs | 5 | 1 | 0 | 1 | 2 |
| Poland | OGQ | 6 | 6 | 4 | 10 | 4 | | | |||||||
| 2005-2006 | Toronto Maple Leafs | NHL | 19 | 4 | 1 | 5 | 6 | | | ||||||
| Boston Bruins | NHL | 16 | 4 | 1 | 5 | 4 | | | |||||||
| Poland | WC D1 | 5 | 3 | 4 | 7 | 2 | | | |||||||
| Poland (all) | International | 5 | 3 | 4 | 7 | 2 | | | |||||||
| 2006-2007 | SC Rapperswil-Jona Lakers | NL | 43 | 21 | 20 | 41 | 70 | | | Playoffs | 7 | 6 | 6 | 12 | 16 |
| 2007-2008 | SC Rapperswil-Jona Lakers | NL | 49 | 22 | 31 | 53 | 30 | | | Playoffs | 5 | 1 | 0 | 1 | 4 |
| 2008-2009 | GKS Tychy | Poland | 1 | 0 | 0 | 0 | 0 | | |