I'm not saying that supplemental draftees have no chance of ever becoming viable fantasy players, but here are the CAREER totals of the two (2) skill position player selected in the last 15 suplemental drafts . . .
John Davis, TE, 88 fantasy points
Tony Hollings, RB, 22 fantasy points
There were a couple of Pro Bowlers taken (G Mike Wahle and DT Jamal Williams), but skill position guys don't seem to come along very often.
There were some much bigger names taken in the supplemental draft before then (Rob Moore, Bobby Humphey, Cris Carter, Bernie Kosar, and of course the zaniness surrounding the 1984 supplemental draft). Normally, though, the supploemental draft has been pretty ho hum in recent memory.