Rupp 13:09 (13:00 last year, 12:58 2012)
Mead 13:10 (13:02 last year)
True 13:05 (13:02 last year)
Hill 13:05
Jenkins 13:07
Derrick 13:08 last year
Something is telling me at least two of these guys will break 13 next year given that it is common for athletes to leave their best seasons in the Olympic Year. True will probably have his career year next year in trying to make the Olympic Team, Jenkins is relatively new to the scene and is expected to improve. Hill and Mead are also running better than when they were in college. As for Rupp, he does not want to give up the 5000m spot unless he ditches the event entirely.
(I excluded Jager because he will be preoccupied with the Steeple, and Lomong because he seldom-attempts the 5000m)