Tyreek Hill is now in a full blown custody war with his baby mama -- who's demanding sole custody of their days-old twins amidst allegations the NFL star physically abused their older son.
For years, it seemed Hill and ex-fiancee Crystal Espinal had buried the hatchet and were working together following Hill's domestic violence conviction stemming from a 2014 incident with Espinal.
But things took a turn ... she had claimed Hill physically abused their 3-year-old son in disturbing audio tapes that surfaced earlier this year. Hill can also be heard making menacing statements to Espinal.