Time will tell, but right now it would seem that the vitamin B12 explanation isn’t working much better for Roger Clemens than the flaxseed oil defense did for Barry Bonds.

Clemens told Mike Wallace in a 60 Minutes interview to be aired this evening that, contrary to allegations, he received injections of vitamin B12 and lidocaine earlier in his career, not steroids and human growth hormones.

Sports writers and sports columnists don’t seem to be taking Clemens at his word, in part because they’ve been down this road before.