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This paper contains our comments on the work of the authors A. I. Ahmadov\textit{et al.} "Single meson production in photon-photon collisions andinfrared renormalons" [arXiv:0911.5226v1 27 Nov 2009]. We draw attention toerrors made in this work in calculation of the subprocess cross sections withinthe frozen and running coupling approaches, in deriving the Borel transformsand Borel resummed expressions for the cross sections in the running couplingapproach. We show that the same fatal errors were made by these authors also intheir work published in Phys. Rev. D80, 016003 (2009).

Comments on "Single meson production in photon-photon collisions and infrared renormalons" [arXiv:0911.5226v1]