Semisch signed a reserve/future contract with the Titans on Monday, Jim Wyatt of the Titans' official site reports.
The Northern Illinois product has yet to make his NFL debut since going undrafted in 2014. He'll join the Titans for their offseason program, but the tight end may need to stand out in those workouts in order to stick around through training camp.
Morgan contributed just one solo tackle in Saturday's 35-14, divisional round loss to New England.
Morgan finished the regular season with 7.5 sacks and picked up another one in a wild-card round win over the Chiefs, but the stout Patriots offensive line rendered the 29-year-old pass rusher useless. With 16.5 regular season sacks over the past two campaigns, Morgan projects to be an impact defender for the Titans in the final year of his contract next season.
Fluellen didn't get a touch in Saturday's 35-14, divisional-round loss to New England.
With DeMarco Murray (knee) sidelined, Fluellen was the only Tennessee running back dressed besides Derrick Henry. Henry was able to carry the load, however, leaving Fluellen on the sidelines. Fluellen has one more year left on his deal with the Titans and will hope to once again end up on the right side of the roster bubble in 2018.
Douglas didn't record a reception in Saturday's 35-14, divisional round loss to New England.
This performance was in line with expectations for Douglas, who recorded just one catch all season while serving as Tennessee's fifth wide receiver. After nine seasons between the Falcons and Titans, the 33-year-old free agent will look to latch on with a new team this offseason. There's no guarantee Douglas is even able to stay in the league, let alone contribute noteworthy numbers next season.
Succop didn't attempt a field goal but made a pair of extra points in Saturday's 35-14, divisional round loss to New England.
Succop didn't get to show off his accurate leg in this lopsided defeat. The 31-year-old pending free agent's near-automatic performance from inside 50 yards should net him a strong salary for his position, as Succop set an NFL record this season with 56 consecutive makes on field-goal attempts under 50 yards.