I did not have time to fully analyze the numbers earlier, but if you look, I am sure someone like Feel Real Good will say that they support his claims, but actually, I think they refute them more because right now, at least 15 teams have first day picks in their starting center (or the guy the plan to be their starter soon). Also, if you look at the undrafted or late-round centers, many of them entered the NFL 8-10 (or more) years ago (yes there are some younger exceptions). I thought we might have been seeing a shift in the importance of the position, but even looking beyond the last 10 years, there have been centers picked in the 1st or early second round almost every year (1996-1998 is kind of an anomaly).
Let's look at some of the better lines in the league and see where their players came from:
San DiegoLT Marcus McNeil - 2nd round pick 2006
LG Kris Dielman - undrafted 2003
C Nick Hardwick - 3rd round pick 2004
RG Mike Goff - 3rd round 1998 Bengals
RT Shane Olivea - 7th round pick 2004
JacksonvilleLT Khalif Barnes - 2nd round 2005
LG Vince Manuwai - 3rd round 2003
C Brad Meester - 2nd round 2000
RG Chris Naole - 1st round 1997 Saints
RT Maurice Williams - 2nd round 2001
PhiladelphiaLT Tra Thomas - 1st round
LG Todd Herremsns - 4th round 2005
C Jamaal Jackson - undrafted 2003
RG Shawn Andrews - 2004 1st round
RT Jon Runyan - 1996 Oilers 4th round
IndianapolisLT Tarik Glenn - 1st round 1997
LG Ryan Lilja - undrafted 2004
C Jeff Saturday - undrafted 1999
RG Jake Scott - 5th round 2004
RT Ryan Diem - 4th round 2001
BaltimoreLT Jonathan Ogden - 1st round 1996
LG Jason Brown - 4th round 2005
C Mike Flynn - undrafted 1997
RG Keydrick Vincent - undrafted 2001 Steelers
RT Adam Terry - 2nd round 2005
New OrleansLT Jamaal Brown - 1st round 2005
LG Jamar Nesbitt - 1999 Panthers
C Jeff Faine - 2003 Browns
RG Jahri Evans - 4th round 2006
RT Jon Stinchcomb - 1st round 2003
SeattleLT Walter Jones - 1st round 1997
LG Floyd Womack - 4th round 2001
C Chris Spencer - 1st round 2005
RG Chris Gray - 5th round 1993 Dolphins
RT Sean Locklear - 3rd round 2004
PittsburghLT Marvel Smith - 2nd round 2000
LG Alan Faneca - 1st round 1998
C Jeff Hartings - 1st round 1996 Lions
RG Kendall Simmons - 1st round 2002
RT Max Starks - 4th round 2004
New EnglandLT Matt Light - 2nd round 2001
LG Logan Mankins - 1st round 2005
C Dan Koppen - 5th round 2003
RG Steve Neal - undrafted 2001
RT Nick Kaczur - 3rd round 2005
Obviously there are players from all over the place. Notice they all have 1st or 2nd round left tackles. Also notice the Bucs had the opportunity to draft all but Ogden and Tra Thomas. Pittsburgh and Jacksonville probably have the players with the highest pedigrees but notice how spaced apart they all are. You don't see any clusters like the two year Joseph/Trueblood/Thomas/Kalil combo some are suggesting.