Ken Griffey Jr. owns one of the sweetest swings in all of baseball. He now ranks No. 9 on the all-time list, having recently passed Rafael Palmeiro with his 570th career round-tripper. Celebrate Griffey's hitting exploits by ordering this autographed baseball, upon which he has inscribed "First HR 4/10/89" to signify the date of his very first major league dinger. For the record, Junior hit it off of White Sox hurler Eric King at the old Kingdome in Seattle. The item is guaranteed authentic by virtue of UDA's patented five-step process.