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There has been a lot of on-the-job training for Bears safety Adrian Amos. Dennis Wierzbicki USA TODAY Sports

The safeties are a team's last line of defense, so usually you want them to be savvy veterans who won't easily be fooled for long gains. That's not the case for the Chicago Bears, though, as they're starting a pair of rookies back there.

Fifth-round rookie Adrian Amos has been starting all season. Harold Jones-Quarterly, an undrafted rookie who was claimed off waivers from Arizona before the season, stepped into the starting lineup after Antrel Rolle sprained his ankle in Week 4.

Amos, in particular, has impressed Bears defensive backs coach Ed Donatell. He said the following about the Penn State product, via ESPN's Jeff Dickerson:

Donatell is also impressed with the progress Jones-Quarterly has made in a short period of time, per ESPN:

While Amos and Jones-Quarterly have shown plenty of promise in the early stages of their career, the Bears really need their young secondary to start creating some turnovers. Chicago only has three interceptions this season (tied for fourth fewest), and all three of those passes were picked off by linebackers.

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