The Dallas Cowboys practiced with the Los Angeles Chargers on Wednesday and it was a rather impressive day for the defense. One of the better parts of the defense throughout camp and preseason so far has been the secondary, specifically the cornerbacks. We have seen Trevon Diggs continue along with his progression and Anthony Brown has had one of the better performances of anyone. On the other end of the spectrum, second-year corner Kelvin Joseph has been disappointing and after a poor showing against the Broncos, he was joined by Nahshon Wright in that department.