  The analyses and results on WW physics obtained in the first year of running
of LEP2 are summarized. The determination of the W mass, both through the
measurement of the WW production cross section at a center-of-mass energy of
161 GeV and through the study of the invariant mass distribution of W decay
products in the 172 GeV run are described first. Preliminary results on
searches for anomalous triple gauge-boson vertices are also presented.
