Everyone seems to be putting Boyce into the slot or Split end (X) WR receiver position. I beg to differ, I believe he better fits into the classic "Flanker" position, opposite the bigger Split End or X position. Flankers were generally smaller, faster and shiftier but deep route running receivers.
So while Dobson and Jenkins (Harrison & Thomkins) compete for the Split End, I think Boyce, Dodd and Hawkins compete at Flanker.
Amendola, Edelmen and Moe compete for the short slot receiver routes.