Well, now you went and made me look it up, dang it. Nettles played 2,412 games at 3B and hit 390 HR's. He played about 100 games at other positions.
Beltre hit 477 HR's but had about 150 with the Dodgers so Nettles is the man. That's a great trivia question.
Nettles should be in the HoF in my opinion.