RENTON, Wash. (AP) — The Seattle Seahawks continued to lock up their 2018 draft class by signing linebacker Shaquem Griffin and cornerback Tre Flowers to rookie contracts Thursday.

Third-round pick Rasheem Green is now Seattle’s lone unsigned draft pick. Griffin and Flowers were both selected in the fifth round.

The Seahawks also signed free agent linebacker Dadi Nicolas and wide receiver Keenan Reynolds. Defensive ends Marcell Frazier and Noble Nwachukwu were waived to make room on the 90-man roster.

Nicolas was a sixth-round pick of Kansas City in 2016 and appeared in 11 games, mostly on special teams. He suffered a patellar tendon injury late in his rookie season and missed all of 2017.

Reynolds was a sixth-round selection by Baltimore in 2016. He transitioned to wide receiver after being a star quarterback at Navy. He spent his rookie season on the Ravens practice squad and was with Washington’s practice squad for part of 2017.