Manziel suspended 4 games over NFL's substance-abuse policy

DALLAS (AP) — Johnny Manziel has been suspended for the first four games of next season for violating the NFL's substance-abuse policy, and the free agent quarterback could face further discipline over his domestic-violence case if he signs with another team.

The suspension announced today is not related to the league's domestic violence policy, but Manziel would be subject to standards that were toughened two years ago if he signs with another team.

The 23-year-old Manziel, released by the Cleveland Browns in March, faces a misdemeanor-assault charge in Dallas involving former girlfriend Colleen Crowley.

The 2012 Heisman Trophy-winning quarterback from Texas A&M was suspended the same week he posted pictures on Instagram from Cabo San Lucas, Mexico.

The post included a reference to his father, Paul Manziel, who called his son a "druggie" after a report from The Associated Press of one of his attorneys mistakenly sending a text that indicated doubts whether Manziel could stay clean.

A spokeswoman for Manziel declined to comment on the NFL's suspension.