His left hand was deadly against southpaws. Look how he wasted Wassaja, who was top quality.Michael Spinks, although often considered to be a destructive puncher at 175lbs, really had to go to town on a lot of his opponents to get the stoppages. Ranquello, Sutherland, Willie Taylor, Rivadeneyra, etc. They all took truck loads of punishment before they wilted. I tend to think Spinks is talked of as a great puncher due to the Marvin Johnson one-punch KO, but we never really saw him take out another quality opponent like that again. Johnson was hit with a perfectly placed, perfectly timed punch that he didn't see coming. Spinks possessed good power, but he wasn't a one-punch killer.