MADISON, Wis. (AP) A federal judge on Thursday sentenced former major league pitcher Jerry Koosman to six months in prison for not paying his taxes.

Prosecutors say Koosman, a former All-Star who helped the New York Mets win the 1969 World Series, didn't pay federal income taxes for 2002, 2003 and 2004. He pleaded guilty in May to willfully failing to file taxes for 2002, a misdemeanor, in a deal with prosecutors.

U.S. District Judge Barbara Crabb found that Koosman cost the government as much as $80,000. She could have sentenced him to a full year in prison but chose to cut that in half and add a year of supervised release, during which probation agents will closely monitor his finances.

Prosecutors say Koosman has filed returns for the missing years but still owes the government about $65,000.