Joey Porter and at least one other Steelers scout spotted at UVA pro day. Have not seen confirmation that Tomlin was there (as some had speculated). It's safe to assume Porter was there to see...
...OLB Eli Harold (6'3, 247) did nothing to dissuade those (McShay & Kiper, among others) who project him as a late first-rounder. He performed drills at both DE and OLB, but expressed a comfort at OLB. He benched 24 reps and had a 34.5" vertical. He did not run the 40 (4.60 at combine)
Other draft prospects
S/CB Ant Harris (6'1, 183) didn't do drills (shoulder injury?) but apparently he did meet with several coaches and scouts. His combine 40 was 4.56.
OLB Max Valles (6'5, 251) ran a 4.79 40 (slightly better than his combine time) and had a 36.5" vertical and 9'9 broad.
RD7/FA names (for some, Valles belongs on this list)
RB Kevin Parks (5'6, 200) ran a 4.73 40. He had a 39.5" vertical, 9'7 broad and 21 reps on bench.
WR Darius Jennings (5'11, 175) ran a 4.40 40. According to his twitter account, he also posted: 37" vertical...10'3 broad...4.29 shuttle...zero drops during drills.
CB Drequan Hoskey (6'0, 180) ran a 4.49 40. He had a 34" vertical and 9'11 broad.
ILB Henry Coley (6'1, 239) ran a 4.95 40 and was listed as a UVA team captain.
Information gathered from local websites and NFL.com