Abstract
Sum rules for virtual Compton scattering of pions have been obtained by using the Weinberg sum rules. Saturation of the sum rules by $\ensuremath{\pi}$, $\ensuremath{\omega}$, $\ensuremath{\varphi}$, ${A}_{1}$, and ${A}_{2}$ intermediate states is found to be still unsatisfactory, suggesting that the sum rules converge very slowly. Also, the connection between the calculation of Das et al. for the ${\ensuremath{\pi}}^{+}\ensuremath{-}{\ensuremath{\pi}}^{0}$ mass difference and those of the standard techniques is discussed and clarified.
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