EMLL (THU) 01/07/1937 Old Arena México, Ciudad de México, Distrito Federal [Box y Lucha 2278, RB]
1) Jack O’Brien b Oscar Arizpe [MEX HEAVY]
listed as the heavweight title (O’Brien lightweight title at this point)
Event Notes: No arena listed, taking a guess
Last Updated: 2026-02-04 18:37:10