According to court records, Knoblauch entered his plea Tuesday in exchange for deferred-adjudication probation. Successful completion of his one-year probation could mean the conviction on the assault of a family member would be expunged from the record.
Knoblauch also was fined $1,000. Knoblauch's attorney didn't return a telephone call Tuesday.
According to a criminal complaint, Knoblauch's wife told police he hit her in the face and choked her at their Houston home in September.
The 41-year-old Houston native played for the Minnesota Twins, New York Yankees and Kansas City Royals from 1991-2002. In 12 seasons, the 1991 American League Rookie of the Year and four-time All-Star batted .289 with 98 home runs and 615 RBI.