Delvin Breaux injury, New Orleans Saints vs Oakland Raiders 2016

New Orleans Saints cornerback Delvin Breaux (40) is helped off the field after getting injured during a play with the Oakland Raiders at the Mercedes-Benz Superdome in New Orleans Sunday, September 11, 2016. (Photo by David Grunfeld, NOLA.com | The Times-Picayune)

((Photo by David Grunfeld, NOLA.com |The Times-Picayune))

The New Orleans Saints played Week 1 with just one cornerback who had NFL experience.

Now, that cornerback -- Delvin Breaux -- is going to miss a significant amount of time.

Breaux suffered a broken left fibula in Sunday's loss to the Oakland Raiders at the Mercedes-Benz Superdome, according to a league source. He'll undergo more tests to determine the next step.

A New Orleans native, Breaux was the Saints' top cornerback in 2015, his first season in the NFL after playing in the Canadian Football League. He exited the game in the second quarter, but then returned briefly in the third quarter before taking a cart to the locker room.

Now, the Saints' top cornerbacks are P.J. Williams, a third-round pick last year, and undrafted rookies De'Vante Harris and Ken Crawley. Veteran Sterling Moore is also on the team, but he was inactive for Week 1 after just joining the Saints last week.