NFL suspends Justin Blackmon again for violating substance-abuse policy

The promising pro football career of Jaguars receiver Justin Blackmon is now officially teetering on the brink of implosion. Blackmon, the fifth overall pick in the 2012 draft, has been suspended for the balance of the 2013 season.  He is eligible to apply for reinstatement before the 2014 season. “All of us who are a…