We analyze the matching conditions to determine the values that the ph
i(p(4)) coefficients of an Effective Chiral Lagrangian take in the Sta
ndard Model in the limit of a large Higgs mass, pointing out a number
of subtleties that appear to have gone unnoticed previously. We apply
the resulting Effective Chiral Lagrangian, including the leading two l
oop effects, to analyze the most recent electroweak data assuming m(to
p) = 174 +/- 10 GeV.