What is your definition of a "sports" model?

[jlovda]

When I walked into the AD in Bergen, Norway last summer to purchase a sports Rolex the only two on display that fit the mold were a Milgauss and a Exp II. I bought the Exp II. My personal feeling is that a Rolex sport watch has a numerical bezel; either fixed or rotating. The Exp I has a long heritage but in my mind it is simply an OP with a "name" and Mercedes hour hand. The Milgauss is also just a variant of an OP. I also think an Air-King is just an OP with a lot of numbers on the dial and Mercedes hands. I'm curious what others here consider "sports" watches.