The issues with
Tremayne Anchrum were pretty much what
@jrry32 has covered......
TA was generally average to good at most of the graded area & elements on playing OL'er but nothing outstanding was perceived in his profile. Thus thats why he was a last round pick.
TA's NCAA career was @ OT & on the right side. But all his coaches said he was fully capable of playing & starting any OL position. But for his Championship team, he was needed @ RT. He did very well playing there so he worked his body to be what a college OT is.
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TA does have some upper body strength for his short stature {6-1 7/8} he did 26 reps before the draft on the bench even with those extra-long arms. As with most all OL'ers coming out of college is was a great amount of bodywork & technical brainwork that
TA needs to build on. I am sure that
TA's lower body power was far below what will be needed to play the interior! That's fine Kromer has the time.
The Rams 2021 OL will not suffer any FA'cy departures other than OC Austin Blythe as best I can see. So this current OL should remain much of the same. The new center (whoever that is) might cause a starting OG to pop open with a vacancy but this Ram OL reserve unit is one of the best in the NFL @ this moment in time. Many unknowns here as to how far all those Ram OC prospects have improved.
Thus far as best I can research is
TA has been getting most of his work on the left side @ LG/LT posts. But I do not consider that to be where he works in the future. Early this TC ....With LT Whitworth having very little to do in practice & LG's Noteboom rehabbing from the knee surgery plus the loss of reserve LG/LT Chandler Brewer (Covid-19) who worked the left side most of the time in 2019 made Kromer have a need for
TA to fill that side.
Tremayne Anchrum 2020 NFL Draft Profile - Last Word on Pro Football (lastwordonsports.com)
Tremayne Anchrum OT Clemson - Draft Player Profile | The Draft Network
2020 Draft Prospects: Tremayne Anchrum, OG, Clemson (patriots.com)
Tremayne Anchrum an interesting prospect | Rams ON DEMAND