Former ISU linebacker Jake Knott announced via his Twitter that he has signed to the Miami Dolphins’ 53-man roster.

Knott had been signed to the Dolphins practice squad since Dec. 2, but makes an NFL roster for the first time since being waived by the Philadelphia Eagles in October.

Knott signed with the Eagles as an undrafted free agent in 2013, playing sparingly in his first year in the league. Prior to the start of the 2014 season, he tested positive for a banned substance and was suspended for the first four games of the season.

After battling hamstring and knee injuries, the Eagles released him and he became a free agent.

Knott was a four-year starter at linebacker from 2009-12 for Iowa State and was voted to an All-Big 12 team three times as a Cyclone. Knott and former ISU linebacker A.J. Klein formed one of the best linebacking duos in ISU history. Klein is now a linebacker for the Carolina Panthers.