After putting the finishing touches on their 2026 NFL Draft class, the Buffalo Bills wasted no time in landing additional rookie talent via the undrafted free agent (UDFA) pool. Any incoming rookie who wasn’t selected during this year’s draft is now eligible to sign with any team as a UDFA.

Will any of the UDFAs announced below end up contributing to Buffalo’s 2026 season and beyond? In recent seasons, Bills Mafia has watched former UDFA running back Frank Gore Jr. go from long shot, to Buffalo’s practice squad, to just last season receiving his first in-game touches during the Bills’ playoff game at the Jacksonville Jaguars.

This season’s list of UDFAs includes surnames that should be familiar to Bills fans, namely those who remember John Fina, and perhaps even former NFL quarterback Mike Tomczak.

We’ll find out more about the undrafted prospects listed below in the coming months! For now, keep it locked in at Buffalo Rumblings as we continue to update this article with every UDFA signing we uncover.

You can also join your fellow Rumblers in The Feed, where the “Unofficial 2026 Bills UDFA Tracker” is humming along!

Theron Gaines, LB (Tennessee Tech) (per Matt Zenitz)

Max Tomczak, WR (Youngstown State) (per Ryan Talbot)

Da’Metrius Weatherspoon, OT (Syracuse) (per Tom Pelissero)