Recent data from proton-antiproton collisions at high energy
provide information on the masses of the Top quark and W boson.  The W
asymmetry data constrains the slope of the d/u quark distributions and
significantly reduces the systematic error on the extracted value of the W
mass.  Drell-Yan dilepton production at high invariant mass yield limits on
extra Z' bosons, and place strong limits on quark substructure.  Compositeness
limits from CDF Run 1, and expected sensitivity in Run II and TEV33 are
presented.