I haven't had a chance to digest all of the workout numbers, but I watched the RBs run their 40s and saw some of the numbers from the other positions. Quick thoughts:
RISING
Golden Tate - He's short like I expected, but he ran a pair of very good times (unofficially 4.37-38, officially 4.42). He may be more like Laveranues Coles than Josh Reed. He's due for a nice bump up my board.
Montario Hardesty - One of the stars of today. I had been down on Hardesty, but he turned in a great effort today with an unofficial best of 4.49 in the 40. He also had the best marks of any RB in the vertical leap and broad jump drills.
Ben Tate - Quietly showed a good physique with quality speed for a 215+ pound back (4.45 unofficially).
Jimmy Graham - Could the former basketball player be the best receiving TE prospect in the draft? He's very fluid for his height (6'6") and he ran in the mid 4.5 range yesterday. Probably the best athlete available at the position by a wide margin.
Toby Gerhart - I wouldn't say he's rising as much as he's holding steady. He solidified his stock with a pair of solid times in the 40 (4.53 and 4.58 unofficially).
FALLING
Jonathan Dwyer - His physique was unimpressive. He appears soft and doughy with a bit of a spare tire around the midsection. He also ran poorly, clocking at 4.59 and 4.69 unofficially. Hugely disappointing for a guy who looked like a potential first rounder. Mathews, Spiller, and Best all looked much better today.
Stafon Johnson - They didn't televise his second 40 due to the non-stop 24/7 Tim Tebow lovefest, but his first time was a disappointing 4.66 unofficially. This showing combined with a ho-hum Senior Bowl week suggests that he lacks the sheer burst and explosiveness of a high end NFL back. He'll be bumped significantly down my board.
Mardy Gilyard - He vowed to prove that he's "not a 4.51 guy" this week. He did that, clocking an unofficial 4.56. Not the kind of time you want to see from a 180 pound WR. Gilyard's ceiling is clearly as a WR2 or WR3 in the NFL.
Brandon LaFell - Impressive physique, but slow time in the 40 (clocked at 4.60 unofficially).
LeGarrette Blount - One of the most overhyped players in the draft looked very bad today, running in the high 4.6 range.
Anthony Dixon - Another back who ran a pair of disappointing times (mid-high 4.6).