If you're a fish, one place you never want to be is in a barrel, because folks with deadly aim, like Clayton Kershaw, are always shooting at you.But tonight, I'm going to grant clemency to our underwater friends and describe Clayton Kershaw's dominance in a different way.Free throws.Unlike basketball, baseball isn't supposed to have free throws. Every action on the diamond that affects or prevents scoring is contested. Theoretically.But in what is looking more like a Cy Young Award-winning season at age 23, punctuated by tonight's 2-1 victory over Tim Lincecum and the San Francisco Giants, Kershaw has become Calvin Murphy at the line. You can wave bats or banners in his face or jump up and down in a rainbow wig, and Kershaw just sets, shoots and swishes.In fact, it has