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2020/05/25

The Best Undrafted Players in NFL History


This is the final post in my series on the NFL draft. I could write a detailed analysis about every draft since 1980 but there is little additional insight to be found. I have shown that drafting well is linked to on-field success and that finding three or four elite players in consecutive drafts can immediately help a team attain a title. Due to short careers and injuries however, you have a narrow window in which to have all of your recent picks play at or near peak level in the same season, which is why dynasties are rarer these days. Trades and free agents are equally important pieces of the puzzle, as the Patriots have shown over the years.

There are two types of free agents: those who have already played several seasons elsewhere and are generally known commodities; and those who have yet to play in the league but were never even drafted. It is this second group that I am discussing in this post. More than any other league, undrafted players have a major impact in the NFL. With 1,696 players on rosters and many others on practice squads, yet only about 256 players drafted every season, there are a lot of opportunities for those overlooked on draft day to make their mark. So once again using Pro Football Reference's Approximate Value metric, I created two lists. The first comprises the top ten (plus ties) best undrafted players in history, that is, the highest total Career Approximate Value (Hall of Famers denoted with an asterisk).
Rk   Player            Pos   From   To    tCAV
 1   Warren Moon*       QB   1984  2000    166
 2   Jeff Saturday       C   1999  2012    156
 3   Mick Tingelhoff*    C   1962  1978    151
 4   London Fletcher    LB   1998  2013    147
 5   Dave Krieg         QB   1980  1998    138
 6   John Randle*       DT   1990  2003    138
 7   Jim Hart           QB   1966  1984    136
 8   Jason Peters        T   2004  2019    130
 9   Antonio Gates      TE   2003  2018    127
10   Sam Mills          LB   1986  1997    126
10   Cornell Green      DB   1962  1974    126
10   Rod Smith          WR   1995  2006    126
TCAV is cumulative, so the longer you play, the higher your tCAV will go. Imagine if Warren Moon hadn't spent six seasons in Edmonton (where he won five Grey Cups). A good variety of positions, with two centers following Moon, and eras, from the 1960s to today, are represented as well.

The second list contains the ten most effective undrafted players, i.e. those with the best tCAV/G. This eliminates career length as a factor, though there are still some names that appear on both lists.
Rk   Player            Pos   From   To    tCAV
 1   Kurt Warner*       QB   1998  2009   .911
 2   Jeff Garcia        QB   1999  2009   .832
 3   Priest Holmes      RB   1997  2007   .832
 4   Warren Moon*       QB   1984  2000   .798
 5   Tony Romo          QB   2004  2016   .744
 6   Jeff Saturday       C   1999  2012   .739
 7   Willie Wood*       DB   1960  1971   .723
 8   Jim Langer*         C   1970  1981   .709
 9   Sam Mills          LB   1986  1997   .696
10   Cornell Green      DB   1962  1974   .692
Kurt Warner had a shorter career as he played some time in the Arena Football League and NFL Europe before beginning his miraculous rise to fame. Jeff Garcia spent five seasons with Calgary before getting his chance, while Priest Holmes signed with Baltimore and won a Super Bowl with them before moving to greater success in Kansas City. You can use PFR's play index to find a complete list of undrafted players and see many other familiar names on it.

Note that these lists includes only players who played their entire career in the NFL, so those who started in the AFL, such as Jim Otto (who would be second overall in tCAV) and Larry Little (8th overall) are not shown.

That ends the series on the NFL draft. I really enjoy PFR's play index and their Approximate Value metric as it allows me to gain some insight into the game that would be otherwise untapped. If you are an NFL fan and looking for things to do during the pandemic, check them out at pro-football-reference.com.

Best,

Sean

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