Jabari Greer has a pulled groin that limited him during Tuesday's practice and left the Saints without either of their first-team cornerbacks on the field.
Cornerback Patick Robinson, who hurt his shoulder Sunday afternoon, has not yet returned, and assistant head coach Joe Vitt says he could be sidelined a couple more days
The injuries, which appear minor, mean more work with the first-team defense for second-year pro Johnny Patrick, free agent acquisition Marquis Johnson and fifth-round draft choice Corey White.
Although quarterback Drew Brees had some long completions against them, Vitt says he feels good about the progress of New Orleans' young cornerbacks.
The Saints (No. 9 in the AP Pro32) open their preseason this Sunday against Arizona in the Hall of Fame game in Canton, Ohio.