Mike Florio of Pro Football Talk is reporting that Steelers WR Santonio Holmes could be facing a four-game suspension for a violation of the league's substance-abuse policy. It's not know however if the violation was for testing positive for a prohibited substance or committed some other violation of the policy, such as missing a required test. A four game suspension comes after multiple violations but his recent legal problems in an alleged assault of a woman in a Orlando nightclub have would not be connected any suspension under the NFL's substance-abuse policy. Source: ProFootballTalk.com
Given his off the field transgressions and the Steelers issues with his tweets, this isnt shocking news