 On August 20, 2008, Griffey hit his first home run as a member of the White Sox, off of the Mariners' R.A. Dickey, which moved him into a tie with former outfielder Sammy Sosa for 5th place in career home runs.He surpassed Sosa on September 23, with one off Minnesota's Matt Guerrier.Griffey's signature moment with the White Sox came on September 30, the last game of the 2008 season; an extra 163rd game between the White Sox and Minnesota Twins to break the tie atop the AL Central.