  We have updated our results on identified charged hadron production using the
full SLD data sample of 550,000 hadronic Z^0 decays taken between 1993 and
1998. The SLD Cherenkov Ring Imaging Detector allows the identification of
clean samples of charged pions, kaons and protons over a wide momentum range,
providing precise tests of perturbative QCD calculations and of fragmentation
models. We have studied flavor-inclusive Z^0 decays, as well as decays into
light, c and b flavors, selected using the SLD vertex detector. In addition we
have updated our comparison of hadron and antihadron production in light quark
(rather than antiquark) jets, selected using the high SLC electron beam
polarization. Differences between hadron and antihadron production at high
momentum fraction provide precise measurements of leading particle production
and new, stringent tests of fragmentation models.
