Explaining SI.com's 2015 NFL draft Grading System

9.5-10: Worthy of being a top-five pick

9.0-9.4: Top-10 pick

8.0-8.9: First rounder

7.0-7.9: Second rounder

6.0-6.9: Third rounder

5.0-5.9: Fourth rounder

4.0-4.9: Fifth rounder

3.0-3.9: Sixth rounder

2.0-2.9: Seventh rounder

1.0-1.9: Undrafted free agent

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