According to a sentencing memo filed in court, federal prosecutors want baseball legend Barry Bonds to serve 15 months in prison for his obstruction of justice conviction.

Defense lawyers argued in their filing that the judge should accept recommendation of the probation office that the ex-baseball player be sentenced to two years probation, fined $4,000, and ordered to perform 250 hours of community service.

“Because Bonds’s efforts were a corrupt, intentional effort to interfere with that mission, a sentence of 15 months imprisonment is appropriate,” the prosecution said in its memo to U.S. District Judge Susan Illston.