  Results are presented for the inclusive jet cross section versus jet
transverse energy in proton-antiproton collisions at center of mass energy 1.8
TeV as measured by the CDF and D0 detectors at Fermilab's Tevatron collider.
The data are compared to next-to-leading order QCD predictions using different
input parton distribution functions. The ratio of inclusive jet cross sections
at center of mass energy 0.63 TeV and center of mass energy 1.8 TeV, versus jet
x_T, is also presented and compared to QCD predictions.
