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We investigate nonresonant thermal leptogenesis in the context of the SU(5)×T13 "asymmetric texture", where both Dirac and Majorana CP violation arise from a single phase in the tribimaximal seesaw mixing matrix. We show that the baryon asymmetry of the universe can be explained in this model only when flavor effects are considered for right-handed neutrino masses of O(1011-1012)  GeV. The sign of the baryon asymmetry also determines the sign of the previouslyWe investigate nonresonant thermal leptogenesis in the context of the SU(5)×T13 "asymmetric texture", where both Dirac and Majorana CP violation arise from a single phase in the tribimaximal seesaw mixing matrix. We show that the baryon asymmetry of the universe can be explained in this model only when flavor effects are considered for right-handed neutrino masses of O(1011-1012)  GeV. The sign of the baryon asymmetry also determines the sign of the previously predicted Dirac CP phase |δCP|=1.32π, consistent with the latest global fit δCPPDG=1.37±0.17π. [ABSTRACT FROM AUTHOR]