At the same time that Jay-Z and Nas were feuding in 2001, Jay-Z’s Philly-bred protégé, Beanie Sigel, was engaged in an almost-as-vicious beef with Jadakiss and his Yonkers-based crew, The Lox.

Jay-Z might be the root cause of this beef. He replaced Jadakiss on two high-profile remixes – Mya’s “The Best of Me” and then R. Kelly’s “Fiesta,” which was released in 2001. Later that year, Beanie fired the first official shots in the war on his track “Beanie (Mack B***h).” Jadakiss replied almost immediately on “Un-hunh” off Kiss the Game Goodbye. Beanie responded on a Roc-A-Fella mixtape, and Jada came right back on Street Wars: The Problem Child.

The feud intensified late in 2001 when Jada dissed Beanie in a freestyle at an event in Beanie’s hometown. Beanie heard about the diss, headed for the venue, jumped on stage, and responded with his own acapella. Later, Beanie delivered his own freestyle disses on Rap City, and then on Hot 97.

Eventually, the feud simmered down. Beanie left Roc-A-Fella and later fired shots at his ex-boss while a member of 50 Cent’s G-Unit. His beef with Jada was officially squashed in the mid-2000s, when the pair appeared together on DJ Khaled’s debut album.