Ken Griffey JR Last MLB Homreun #630 SHARE ON: russ — November 28, 2012 Tags: 2000's2009BaseballCincinnati Redsken griffey jrMLBsafeco fieldSeattle MarinersSeattle WA Ken Grifey Junior hit his MLB career # 630 HR October 3, 2009 This would be Junior's Last Homerun in the Major Leagues