What happened: Emari Demercado joined the Cowboys on a waiver claim finalized Aug. 31. Broderick Jones arrives in a trade and adds to the offensive tackle competition.

Why it matters: The moves give Dallas another running back option and more depth along the offensive line ahead of the 2026 season. Jones’ arrival follows a trade package that sent a third- and sixth-round pick to Pittsburgh while Dallas received a fourth-round pick.

What to watch: Roster roles and the tackle competition remain key developments to follow before the season opener.