When healthy, Tyrann Mathieu believes he's the best defender in football.
The Arizona Cardinals safety has torn his ACL twice in the last four years.
"I'm feeling great, it will be a great year for us," Mathieu said. "Any time I'm healthy I feel like I'm the best defensive player in the NFL."
Mathieu's latest ACL injury was deemed a "clean" tear, so it's reasonable to believe he can make another run at top defensive honors now that he's feeling "great" again.