  Results for d$\sigma$/d$\Omega$ and $A_N$ in the reaction $\bar{p}p
\rightarrow \pi^- \pi^+$ are predicted by a simple quark model. They are
compared to recent experimental data from LEAR, as well as to previous
predictions from nucleon-exchange models. At low energy the quark model does
better than the nucleon-exchange models, but the overall comparison to
experiment remains poor. In particular, the double-dip structure of the
experimental $A_N$ data is only partly represented. This shortcoming of the
simple quark model is traced back to a too small J=2 amplitude. This has
interesting implications for the range of this specific annihilation process.

Nuclear Theory