The Saints placed Styles (calf) on injured reserve Tuesday, John Hendrix of AthlonSports.com reports.
Styles picked up a calf injury during the Saints' preseason loss to the Rams on Aug. 22. The injury is severe enough for the rookie sixth-rounder to open the regular season on injured reserve, requiring him to miss at least four games unless he works out an injury settlement with the team. Styles' first opportunity to make his NFL regular-season debut is Week 5 against the Vikings on Sunday, Oct. 11.