Last of Big Red Machine decides to retireSEATTLE (AP) - Ken Griffey Sr., who is ending a baseball career studded with honors, says his finest hour came late in his 19 years in the major leagues — when he took the field with his son,“Playing with Junior over the last two seasons was definitely the highlight of my career, Griffey said as the Seattle Mariners announced his retirement Monday.Griffey followed his son. Ken Griffey Jr., to the Mariners and they became the first father-son duo to play in the major leagues at the same time. Junior, as the younger Griffey is called, is already a two-time American League All-Star at the age ol 21.Griffey Sr. was a three-time All-Star and a member of the Big Red Machine in Cincinnati that won two World Series in the 1970s. He hit a home r’/nagainst eveiy major league club except Cleveland.In announcing his voluntary retirement, the Mariners saidGriffey. 41. could be offered a job with their organization.“Senior may still work for the Mariners, said Brian Goldberg, his agent in Cincinnati. “Senioris weighing some options now ”- • - • • *Griffey, who resides in West Chester. Ohio, near Cincinnati.did not immediately return a call for comment.Mariners general manager Woody Woodward said he had talked to Griffey about joining the organization in another capacity, and said he would talk to Griffey again next week.Griffey missed most of the 1991 season with a herniated disk in his neck. He began the season on the disabled list after suffering the neck injury in a caraccident during spring training.He came off the disabled list on April 16 and hit .282 in 30 games, with nine home runs and nine RBIs, before recurring pain in his neck forced him back onthe disabled list on Junr fiGriffey underwent surgery in Cincinnati on Sept. 11 to repair the bulging disk.“I was noping to be able to come back for one more year,