dpodoll68
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In an effort to provide some empirical evidence that star rankings do matter, I conducted my own research regarding the 5 most recent NFL drafts, and where first rounders ranked as recruits on Rivals. I used the 2006-2010 NFL Draft 1st rounders, and since nearly all of those picks came from the 2002-2006 recruiting classes, I used those data sets as a reference point.
Before you view the link, there were some basic problems with the data:
- Eight of the 2006 draftees were recruited in 2001, before Rivals assigned star rankings. Given that several of those would have been highly ranked under the Rivals system (Matt Leinart, Jay Cutler, Michael Huff, Joseph Addai) their exclusion actually biases the results in favor of the "stars don't matter" crowd.
- The Rivals database is notoriously buggy technically, especially when you go further back. I was unable to get a count of total 2-stars for any year. I used 1000 for each year as a placeholder, which is likely a very low estimate. Further, I was unable to see exactly how many total 3-stars there were for 2003, as the website would not let me go past 1100 total prospects. Based on that number, there were at least 841, so that is the number I used. Again, both of these problems in data access bias the results in favor of the "stars don't matter" crowd.
- Some of the 2010 draftees were actually recruited in 2007. The number is sufficiently small, and given that I'm using a 5-year average, I feel the numbers will remain close even with disregarding the actual data from the 2007 recruiting class.
All of that being said, here is a link to my results below:
http://tinyurl.com/3t3ncs8
The most pertinent results:
18.06% of 5-star recruits were drafted in the first round
5.32% of 4-star recruits were drafted in the first round
less than 0.98% of 3-star recruits were drafted in the first round
less than 0.30% of 2-star recruits were drafted in the first round
Some other facts to consider:
- Only 2 unranked prospects (Dominique Rodgers-Cromartie and Clay Matthews) were drafted in the first round between 2006 and 2010.
- Only 1 walk-on (Matthews) was drafted in the first round between 2006 and 2010.
- Given that there are roughly 4,080 draft eligible DI-A prospects available each year (34 seniors/juniors per squad * 120 DI-A teams), the odds of being selected in the first round (32/4080) in any given year is approximately 0.78% for draft-eligible DI-A players. Given that 18.06% of 5-star recruits were selected in this five-year period, that means the average 5-star draft-eligible player was approximately 23 times more likely to be selected in the first round than the average draft-eligible DI-A player.
Before you view the link, there were some basic problems with the data:
- Eight of the 2006 draftees were recruited in 2001, before Rivals assigned star rankings. Given that several of those would have been highly ranked under the Rivals system (Matt Leinart, Jay Cutler, Michael Huff, Joseph Addai) their exclusion actually biases the results in favor of the "stars don't matter" crowd.
- The Rivals database is notoriously buggy technically, especially when you go further back. I was unable to get a count of total 2-stars for any year. I used 1000 for each year as a placeholder, which is likely a very low estimate. Further, I was unable to see exactly how many total 3-stars there were for 2003, as the website would not let me go past 1100 total prospects. Based on that number, there were at least 841, so that is the number I used. Again, both of these problems in data access bias the results in favor of the "stars don't matter" crowd.
- Some of the 2010 draftees were actually recruited in 2007. The number is sufficiently small, and given that I'm using a 5-year average, I feel the numbers will remain close even with disregarding the actual data from the 2007 recruiting class.
All of that being said, here is a link to my results below:
http://tinyurl.com/3t3ncs8
The most pertinent results:
18.06% of 5-star recruits were drafted in the first round
5.32% of 4-star recruits were drafted in the first round
less than 0.98% of 3-star recruits were drafted in the first round
less than 0.30% of 2-star recruits were drafted in the first round
Some other facts to consider:
- Only 2 unranked prospects (Dominique Rodgers-Cromartie and Clay Matthews) were drafted in the first round between 2006 and 2010.
- Only 1 walk-on (Matthews) was drafted in the first round between 2006 and 2010.
- Given that there are roughly 4,080 draft eligible DI-A prospects available each year (34 seniors/juniors per squad * 120 DI-A teams), the odds of being selected in the first round (32/4080) in any given year is approximately 0.78% for draft-eligible DI-A players. Given that 18.06% of 5-star recruits were selected in this five-year period, that means the average 5-star draft-eligible player was approximately 23 times more likely to be selected in the first round than the average draft-eligible DI-A player.