A lot of guys used a cross arm defense when stunned as opposed or with peekaboo to cover up...from wolgast and Langford to present
I didn't search for articles. I found it by clicking on an image of Ken Norton through google images. You made an overreaching dumb accusation. That's why I called you skippy, skippy.
And then at the end he clarifies: "While there is no harm in calling Mayweather's style the Philly Shell, it's fascinating to examine the evolution and the minor differences between them." I believe he's mistaking Floyds stylistic nuances with some broader evolution.