  We use the LoopSim and VBFNLO packages to investigate a merged sample of
partonic events that is accurate at NLO in QCD simultaneously for the WZ and
WZ+jet production processes. In certain regions of phase space such a procedure
is expected to account for the dominant part of the NNLO QCD corrections to the
WZ production process. For a number of commonly used experimental observables,
we find that these corrections are substantial, in the 30-100% range, and in
some cases their inclusion can reduce scale uncertainties by a factor of two.
As in the underlying VBFNLO calculations, we include the leptonic decays of the
vector bosons and all off-shell and finite-width effects.
