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2021 NFL Draft Comps: Traditional and advanced stats point to different outcomes for BYU WR Dax Milne

Sep 7, 2020; Annapolis, Maryland, USA; Brigham Young Cougars wide receiver Dax Milne (5) carries the ball against the Navy Midshipmen during the first half at Navy-Marine Corps Memorial Stadium. Mandatory Credit: Scott Taetsch-USA TODAY Sports

Comparing current NFL draft prospects to those of years past is standard procedure in draft evaluation, though most comparisons are built on the memory recall and subjective opinion of the particular evaluator.

This will be the first in a series of articles comparing the 2021 draft prospects to prior years and picking out the most similar comps with a clearly delineated and quantifiable method.

PFF data scientist Eric Eager has done tremendous work building college-to-pro projections, which are built off the robust college data we’ve collected since 2014 and have been applied to exercises like building an “Analytics” Mock. In this analysis, I will use some of our advanced stats for comparison but primarily rely on traditional stats to go back further to compare the 2021 prospects to draft classes going back to 2006.

Without the NFL Scouting Combine this season, the important measurables like weight and 40-yard dash will be reported through the various pro days that will be taking place over the next few weeks.

View PFF's 2021 NFL Draft position rankings:

QB | RB | WR | TE | T | iOL | DI | EDGE | LB | CB | S

METHODOLOGY

The comps below were derived from a two-step process. First, I converted all the most statistically relevant stats and measurables to percentiles based on the thousands of prospects who have entered the NFL since 2006 at each position. Then, I filtered the total universe of past prospects by those who had draft positions, weight and 40 times within a 10th percentile in either direction of BYU WR Dax Milne. For undrafted players, I assigned a numerical draft position of 300.

The rest of the matching features were transformed by principal component analysis (PCA). I found the closest statistically comparable players by the euclidean distance between the players' principle components, listed in the top 10 below.

The metrics for PCA are career market shares for receiving yards and receiving touchdowns, best-season market shares for receiving yards and touchdowns, yards per route run, and yards per reception.

For Milne's draft position, I’m using an estimate based on the mock data collected at GrindingTheMocks.com. For the weight and 40 time, I’m using the numbers from his pro day, with a 0.03-second penalty added to the 40 time to reflect the uncertainty of pro-day timed measurements.

Most comparable players

Milne didn’t do anything special at the BYU pro day, hitting 4.54 seconds on the 40-yard dash and coming well short of 10 feet on the broad jump. He did display good agility, with a 6.85-second three-cone time at 6-foot-1 and 195 pounds, and showed some of that footwork and body control last season.

Milne has likely garnered more eyeballs than most later-round receiver prospects thanks to playing with QB Zach Wilson, the likely No. 2 pick of the draft.

Milne’s stats look better on an absolute basis than his market share. He didn’t hit 30% shares in receiving yards or touchdowns in 2020 despite accumulating nearly 1,200 receiving yards and eight touchdowns. Milne had a relatively strong 3.7 yards per route run, buoyed by Wilson’s 11 yards per pass attempt.

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