2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176149This Letter considers the generalized second law of gravitational thermodynamics in two scenarios featuring a phantom dominated expansion plus a black hole. The law is violated in both scenarios.8 pages, one eps figure, to be published by Physics Letters BGeneral Relativity and Quantum CosmologyAstrophysicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext