NEW YORK (AP) _ Pat LaFontaine announced his retirement from the New York Rangers on Tuesday, citing the effects of six concussions.

``Every time you suffer a head injury, the risk gets higher and higher,'' the 33-year-old star center said.

LaFontaine sustained his latest concussion March 16, ending his only season with the Rangers. Neurologist Jim Kelly told him he was at risk for more concussions and suggested he retire.

``I've had a lot to think about since talking to my doctor,'' LaFontaine said. ``The National Hockey League has given me a great deal. It's allowed me to live a dream.

LaFontaine played 15 seasons in the NHL with the New York Islanders, Buffalo Sabres and the Rangers, finishing with 468 goals, 545 assists and 1,013 points. He also played on the 1984 and 1998 U.S. Olympic teams and the 1996 World Cup team.

Severely injured when he was checked by Pittsburgh's Francois Leroux, LaFontaine played just 13 games in the 1996-97 season and was urged to retire then by the Sabres. He resisted and was traded to the Rangers, scoring 23 goals and 39 assists in 67 games and finishing as the team's second highest scorer.

He finishes his career second only to Joey Mullen in goals by U.S.-born players. Mullen had 502 goals.