Miami Dolphins defensive end Dion Jordan was suspended four games for violating the NFL's policy on performance enhancing substances, the league announced Thursday.
Jordan, the No. 3 overall draft pick in 2013, recently said he had gained 17 pounds of muscle compared to last season, according to ESPN.com. He posted just 26 tackles and two sacks in limited playing time as a rookie.
"We were disappointed to learn about Dion's suspension," Dolphins coach Joe Philbin said in a statement. "Dion has accepted responsibility for his actions and is committed to improving, both on and off the field, in preparation for the upcoming year."
Jordan will be eligible to return to the Dolphins' active roster on Monday, Sept. 29 following the team's Sept. 28 game against the Oakland Raiders.
"I recently learned from the NFL that I tested positive for stimulants that are banned under the NFL policy," Jordan said in a statement. "I worked carefully with my advisors and the union to investigate the test results, and I take full responsibility for the test results.
"I'm very sorry for the impact of this situation on my teammates, coaches, Stephen Ross, the entire Dolphins organization, fans and my family as well. I will continue to work extremely hard during training camp and preseason. During the suspension, I will stay in top shape and will be ready to contribute upon my return."
Jordan is eligible to participate in all offseason and preseason practices and games.