Season-ending starters:Lawrence Timmons, Kiko Alonso, Chase Allen
Season-ending backups: Stephone Anthony, Neville Hewitt, Mike Hull
Ended season on injured reserve: Lamin Barrow, Raekwon McMillan, Koa Misi
2017 transactions (after final roster cuts):
Sept. 3 — Claimed Justin March-Lillard off waivers from Kansas City (9/3); waived Trevor Reilly
Sept. 4 — Signed Trevor Reilly to the practice squad
Sept. 19 — Placed Lawrence Timmons on the Reserve/Suspended by Club list; acquired Stephone Anthony from New Orleans in a trade for a 2018 fifth-round pick
Sept. 26 — Reinstated Lawrence Timmons; waived Justin March-Lillard
Oct. 9 — Signed Neville Hewitt to the practice squad; released Trevor Reilly from the practice squad
Nov. 18 — Waived Rey Maualuga
Nov. 22 — Signed Neville Hewitt to the active roster from the practice squad
2018 free agents: Koa Misi (UFA), Neville Hewitt (RFA), Lamin Barrow (UFA)
2017 recap: Kiko Alonso again led the way for the linebacking corps, finishing second on the team in tackles with 115 to go along with a sack, five quarterback hits and two forced fumbles. Veteran Lawrence Timmons started 14 games after joining the team as an unrestricted free agents and was third on the team in tackles with 84. Though the Dolphins usually opened with five defensive backs, rookie free agent Chase Allen ended up starting four games. Veteran Rey Maualuga, who was signed in August, also made four starts before he was waived in November. Injuries were a big story in the linebacking corps as veteran Koa Misi and rookie second-round pick Raekwon McMillan both spent the entire season on injured reserve.
Stat that stands out: Alonso's 115 tackles represented the exact same total he had in his first year with the Dolphins in 2016.