Teams can request players at #NFLCombine to work out at 2nd position. It gives you insight as to how player is viewed. Some requests this year:

QB Nick Fitzgerald (TE)
QB Trace McSorely (DB)
RB Devin Singletary (WR)
WR Hakeem Butler (TE)
DT Ed Oliver (LB)
DT Dre'Mont Jones (LB)

— NFL Draft (@NFLDraft) March 2, 2019