On December 18, 2023, Julien Guyon was live on the French TV network La chaîne L’Équipe. In what might well be a TV world premiere, he commented on the draw probabilities of the UEFA Champions League, Europa League, and Europa Conference League, and how they evolve during the draw. Due to the draw constraints and draw procedure, the probabilities are not easy to compute! The live probability calculator is joint work with Frédéric Meunier and second year École des Ponts students: Flavien Audibert, Bilel Benaich, Yohann Canavese, and Akram Lamssyah. The TDLOG course team (Xavier Clerc, Etienne Polack) also contributed, as well as Edgar Duc and Antony Feord (via Ponts Etudes Projets).
Julien also explained how the probabilities are computed in this article in Le Monde, which even includes a nerdy link to a detailed mathematical explanation—a nice mix of probability theory and graph theory.