Both teams enter the August 15 preseason matchup at Lumen Field with comparable roster uncertainty and depth questions heading into the 2026 campaign. Training camp reports highlight ongoing competitions at key positions, including offensive line adjustments and secondary depth for Dallas alongside Seattle’s efforts to integrate new additions and evaluate young talent at quarterback and skill spots. Limited starter participation typical of Week 1 exhibitions creates parity, as neither side has established clear advantages in recent joint practices or intrasquad drills. Late injury designations or standout performances from undrafted rookies and fringe roster players could quickly shift implied probabilities by clarifying depth chart clarity ahead of the regular season.