Robinson is set to play the final season of his four-year, $21.2 million rookie deal that will play him $3.4 million. Since being selected with the second overall pick in the 2014 NFL Draft, he has started in 42 of the 46 games that he has played in.
This decision shouldn't come as much of a surprise given that the 24-year-old has struggled to play with any consistency through his first three seasons. All of his difficulties appeared to hit a head in 2016 as he led the league with 14 penalties in 2016 while also grading 73rd out of 80 qualified offensive tackles, according to Pro Football Focus.
In line with that, Los Angeles has already announced that Robinson will make the position switch to right tackle with the offseason addition of former Pro Bowl left tackle Andrew Whitworth via free agency on a three-year, $36 million deal. This also pushes Rob Havenstein inside to starting at right guard after being the starter at right tackle for his first two years in the league.
With the Rams deciding not to pick up the fifth-year option on Robinson, it also signals that this is the last serious effort the team will give him to prove he can be a viable starting offensive lineman.