USC had seven players participate in the NFL combine, which officially concluded Tuesday in Indianapolis. Some of those players helped their stock significantly and some hurt it sizably. In order of projected draft selection, let's break down the performances:
LT Matt Kalil
Kalil did absolutely nothing to hurt his status as arguably the top non-quarterback in the draft and did a good amount to help it. Scouts were impressed with the 306 pounds on his 6-foot-7 frame, and his official 4.99 40-yard dash time was among the best for offensive linemen.
Reports from Indianapolis had him as the top performer in position-specific drills, too.
DE Nick Perry
We wrote a month ago that Perry could stand to benefit more from the combine than any other player in the country. That turned out to not be too far-fetched.
The defensive end bulked up to 270 pounds on his 6-3 frame for the event and managed to keep his 40-yard dash time under 4.6 seconds, according to multiple reports. An official time of 4.64 is still darn fast, especially when considering his 38.5-inch vertical leap.
Compare those numbers to what DeMarcus Ware, a college defensive end who now plays 3-4 outside linebacker in the NFL, put up in the 2005 combine: He measured in at 6-4 and 256 pounds, ran a 4.56 40 and jumped 38.5 inches.
Those are very similar. Ware beat Perry in the 20-yard shuttle and three-cone drill, but Perry comfortably beat Ware in the bench press.
Ware went 11th overall to the Cowboys in 2005. Perry's going to go in the first round too.
DT DaJohn Harris
Harris didn't do the 40 or bench press or any of the other drills because of an unspecified injury, but he did measure in at 6-3 and 306 pounds, meaning he likely lost a good five or 10 pounds from his 2011 playing weight.
Still a potential third-rounder, USC's March 7 pro day is now an absolutely crucial event for Harris.
FB/TE Rhett Ellison
It's a bit difficult to gauge Ellison's performance, seeing as he worked out with the fullbacks but weighed in more like a tight end than any sort of back.
At 6-5 and 251 pounds, any size-related questions about him are no longer viable. And his 4.88 40 time is just fine for a tight end -- not fast, but not terribly slow. He might end up going higher than we realize.
A fifth-round selection seems like a possibility, especially considering the other tight ends in his class and Ellison's special-teams skills.
LB Chris Galippo
Galippo did about as well as expected. His official 40-yard dash time of 4.87 wasn't great, but it could've been worse. And his three-cone drill and 20-yard shuttle numbers were both in the top three of all linebackers.
Is he going to get drafted? Maybe, maybe not.
DT Christian Tupou
Tupou had to hurt himself some with his 5.42 40-yard dash, the second-slowest of all defensive linemen at the combine.
For comparison's sake, former USC DT Loni Fangupo, 34 pounds heavier than Tupou, ran a 5.18 and did six more bench-press reps.
With his injury history and lack of measurable production, it's hard to see Tupou as a draft pick. A late-round selection is always a possibility, though.
RB Marc Tyler
Tyler knew he wasn't going to run fast, but he didn't know he was going to run that slow. A 4.76 40-yard dash will probably take him out of serious draft consideration, and, at 5-11 and 219 pounds, he can't even be thought of as a big back, really.
That's pretty much the average running-back size in the NFL, and Tyler's not fast enough to play at the size.
He was a good pass-catcher at USC, but that was more because of his awareness than his pure pass-catching ability. Reports on his play in those drills at the combine weren't great.