With the Detroit Lions, the roster is always fluid. Here are five moves, including an addition to the coaching staff, made on Tuesday:

1. The Lions were awarded quarterback Thaddeus Lewis off waivers from Cleveland. Lewis had one start last season and was 22 of 32 for 204 yards with a touchdown and an interception. The Lions have Shaun Hill as a backup but he’s coming off foot surgery and last week at OTAs had his left foot in an orthopedic boot. Kellen Moore was the third quarterback last season. Perhaps Lewis will push Moore and rookie Alex Carder (Western Michigan) for that third spot.

2. Jeff Backus will return but in a coaching role of sorts. Backus will serve as a part-time coaching intern. He’ll work with offensive line coach Jeremiah Washburn to help develop the young line especially Riley Reiff, Jason Fox and Corey Hilliard at the tackle position.

3. Spencer Nealy, an undrafted defensive lineman, was signed. He played at Texas A&M at both defensive end and tackle.

4. Robert Maci, an undrafted defensive end out of Purdue (Cliff Avril’s alma mater), was signed. 

5. Released defensive tackle Michael Brooks (East Carolina) and wide receiver Chastin West (Fresno State).

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