The Dallas Cowboys face their first real test of 2026 in a joint practice with the Los Angeles Rams at the Rams' facility in Woodland Hills, California. Following a disastrous 2025 season where the Cowboys allowed 511 points—the most in the NFL—the defense enters 2026 under new coordinator Christian Parker, who replaced Matt Eberflus. While last year's joint practices featured limited defenses without key players like Trevon Diggs and Micah Parsons, the unit was criticized for being vanilla and lacking physicality.

Parker emphasized the importance of facing a proven offense led by Sean McVay and Matthew Stafford, noting their pre-snap motion and formation awareness. Safety Malik Hooker highlighted communication errors and insufficient physicality in last year's practice, adding the defense aims to test its skills against a healthy Rams squad featuring Davante Adams, Puka Nacua and Kyren Williams, who rushed for 1,252 yards and 10 touchdowns last season.

Communication remains central to Parker's strategy, with players like linebackers and defensive backs constantly adjusting and alerting teammates during practice. Quarterback Dak Prescott praised the defense's intensity and communication, noting it raises the energy level and even frustrates the offense—in a positive way. With 12 new starters or key contributors, the Cowboys defense seeks confidence ahead of their August 18 matchup against the New Orleans Saints.