Ted Miller Mel Kiper has made two lists of top NFL prospects by positions: top seniors and and top juniors (or draft-eligible sophomores). As for the Pac-12 prospects on his lists, it appears the conference is stronger among juniors than seniors. Of course, a lot of early-round talents don't last until their senior seasons. And the offensive talent far eclipses the defensive talent. Here's where Pac-12 seniors rank among his top five seniors by position. (Note the lack of highly rated defensive players.) Quarterback No. 3 Nick Foles, Arizona Kiper comment: "Is Foles more of a physical prototype than a QB?" Receiver No. 4 Juron Criner, Arizona No. 5 Chris Owusu, Stanford Tight end No. 3 David Paulson, Oregon No. 4 Coby Fleener, Stanford Offensive guard No. 2 Ryan Miller, Colorado Kiper comment: Miller could be the second top-OL guy from Colorado in as many years, following Nate Solder. Center No. 4 Garth Gerhart, Arizona State Safeties No. 5 Lance Mitchell, Oregon State Punter No. 1 Bryan Anger, California And here's Kiper's take on Pac-12 juniors (and draft eligible sophomores). Quarterback No. 1 Andrew Luck, Stanford No. 2 Matt Barkley, USC Kiper comment: Amazing that, in terms of eligibility, Luck is still a junior. He'll command the most attention, for sure. Even with a new coach, he will be a front-runner for No. 1 in the 2012 NFL draft from August onward. Barkley has had two solid seasons at USC -- and this while thrown into a pretty tough situation. Running back No. 3 LaMichael James, Oregon Fullback No. 5 Taimi Tutogi, Arizona Offensive tackle No. 1 Matt Kalil, USC No. 2 Jonathan Martin, Stanford Kiper comment: Kalil has been a guy pro scouts have known since he arrived at Southern Cal. He has the bloodlines, the frame and the footwork to be a future left tackle in the NFL. Nobody will be under a bigger spotlight at the position this year than Martin, who protects the blind side of Andrew Luck. Offensive guard No. 1 David DeCastro, Stanford Kiper comment: Stanford has a wealth of talent on the offensive line, and the departure of Jim Harbaugh shouldn't diminish what they're able to accomplish. When it comes to the running game, watch DeCastro, who will maul on the interior. Linebacker No. 1 Vontaze Burfict, Arizona State Kiper comment: There are some scary hitters on this list, starting with Burfict, who was most productive against ASU's toughest competition last season. The guy was a force, quite literally, the moment he stepped on campus. Imagine if he'd stayed with USC. Outside linebacker No. 2 Chase Thomas, Stanford Cornerback No. 2 Cliff Harris, Oregon Safety No. 4 T.J. McDonald, USC Punter No. 1 Jeff Locke, UCLA Originally posted by ESPN.com - Pac-10 Blog Click here to view the article.