Ken Griffey Jr - 6 times, 1993, 1994, 1996, 1997, 1998, 1999. 56 twice in 1997 & 1998
Have you ever seen someone happier on a baseball field? Getting to the bigs at 19 and getting to play next to your old man, the joy was easily apparent with Jr. The power took a while to come around, but the swing was sweet as ever, and is still one of the greatest things in all of sports to watch.
Griffey would hit 45 homers in 1993, showcasing true power at just 23 years old. He essentially hit 40 every season after that, as we toss out the strike shortened season (still stupid). 45,40,49,56,56,48. What a run by Griffey. He had 398 homers in Seattle by the end of the 1999 season, and it was a true conversation about when a healthy Griffey would break the all-time homer record.
Real quick. A Griffey that plays... 142 games a year for 7 more years, then 100-120 for the last 4 years? Let's say he averages about 42 a year for those first 7 (he hit 30 at age 38 still and 35 at 35), and that puts him at 678. 30-24-19, and that's a total of 765. And that's not even being over the top with his numbers.
Alas, he left to Cinci, dealt with injuries, but came back to finish his career in Seattle. Let's remember, instead, Griffey for who he was during those first 11 years. One of, if not, the greatest outfielder to ever play the game of baseball.