It's no secret that the Dallas Cowboys entered the offseason needing to make massive changes on defense. The Dallas defense was the clear winner of the day, according to reports from Patrik Walker of DallasCowboys.com. "It wasn't close at all," Walker wrote on X.Cowboys Defense Had Matthew Stafford StrugglingLos Angeles Rams quarterback Matthew Stafford (9) during training camp at Loyola Marymount University. The Dallas defense will need to prove itself once the season begins and the bullets actually start flying. — Sign up for the Cowboys Daily Digest newsletter for more free coverage from Dallas Cowboys on SI —