Detroit Lions CB Darius Slay agreed to a four-year, $50.2 million extension Friday, July 29, with $23 fully guaranteed, according to a source.

Footballguys View: Slay elevated his game to near “shutdown” level last year. The Lions were smart to lock him at a reasonable price this year and avoid the 2017 free agent market setting his value, which would have surely been higher. Teams are usually more accurate evaluating their own talent and get the best deals when they extend their own before their contracts are up.