We present a calculation of the single top quark cross section for pro
ton-antiproton interactions with root s = 1.8 TeV at the Fermilab Teva
tron collider. We examine the effects of the top quark mass, parton di
stribution functions, QCD scale, and collision energy, on each of the
component production mechanisms, and study the kinematic distributions
for standard model electroweak production. At the upgraded Tevatron w
ith root s = 2.0 TeV and high luminosity, it will be possible to test
the nature of the Wtb coupling using single top quark production. We e
stimate the sensitivity to measure the single top quark cross section,
and thus to directly measure V-tb and the top quark partial width. We
show what happens to the V-tb measurement when an anomalous (V+A) com
ponent is added to the Wtb coupling, and how the top quark polarizatio
n affects the kinematic distributions.