James Harrison calls out NFL over PED interview

Pittsburgh Steelers linebacker James Harrison is not happy about the league's investigation of players stemming from an Al Jazeera America report about performance-enhancing drug use in the NFL.

The veteran is upset the league is interviewing players, including Green Bay Packers linebackers Clay Matthews and Julius Peppers, about the alleged use of human-growth hormone.

Harrison posted the chastising letter received by the interviewees, and tagged the NFL and commissioner Roger Goodell when writing "When you say 'jump,' I don't ask how high...I ask 'Why?'"

Another post quoted part of a letter sent by the union on behalf of Harrison to the league:

"We write to inquire if the NFL has any credible, documented evidence beyond the Al-Jazeera report upon which it believes an investigation of Mr. Harrison under the Performance Enhancing Substances Policy (PES Policy) is warranted."

Harrison has had a combative relationship with the NFL throughout his career, recently making multiple posts online about the unfairness of random drug testing.