Yeah, only seven Americans have ever gone under 6:20; besides of course Shani Davis and über-American Chad Hedrick those were Derek Parra in 2002, Emery Lehman, Brian Hansen en Trevor Marsicano in the past 11 years and Jonathan Kuck of all places who joins Hedrick as only one to ever go under 6:10 when he had his weird super season for one month or something.
Too bad KC Boutiette never made it past his 6:22 in the SLC Olympics.
The 10k is a little sadder, with only four guys ever going under 13:20 (Hedrick, Davis, Hansen and Kuck).