Well, baseball used to have a clock. It was called "the sun". And it did have a noticeable effect on the length of games, and especially the length of the later innings when the sunlight began to dwindle. Somewhat similar to the effect of the end of regulation in basketball, but not all that much. A small point, but one worth making. Also, for my two cents, I could care less about steroids and the Mitchell Report. The vilifying of McGwire, Sosa, Bonds, et al is hilariously hypocritical given the circumstances. That doesn't mean that I think players should take steroids, it means that I don't blame them for doing so considering the circumstances.