The draft is a three-day television event attached to a four-month evaluation process. Most of what determines the picks happens before anyone is on the clock, and each stage of the calendar contributes something different — some of it far less than the coverage suggests.
January: the board takes shape
The regular season ends and the order for the eighteen non-playoff clubs is fixed immediately. The rest of the order resolves over the following month as the bracket plays out.
Underclassmen must declare for the draft by a deadline in mid-January. Until that passes, nobody knows the actual size of the class, which is why December mock drafts are an entertainment product rather than an analytical one.
Then the all-star games. The Senior Bowl in Mobile, Alabama is the significant one, alongside the East–West Shrine Bowl and other invitational events. The games themselves matter very little. The practices are the event: prospects are coached by NFL staffs, matched against players from other conferences, and evaluated in one-on-one drills that college tape rarely provides cleanly. A small-school prospect holding up in Mobile against players from major programmes is one of the genuinely load-bearing pieces of evidence in the whole cycle.
Late February and early March: the combine
The scouting combine, held in Indianapolis, invites several hundred prospects for a week of testing, interviews and medical examinations.
The public sees the timed drills. Clubs mostly care about the other two.
The medicals are the point. Every club's medical staff examines every invited player, in one building, over a few days. There is no other opportunity to do this. A failed or flagged medical moves players by rounds, and it does so silently — a prospect who slides on draft night with no public explanation has very often been dropped by half the league's doctors weeks earlier.
The measurements are official. Height, weight, hand size and arm length are taken by the league rather than self-reported. Arm length is not trivia; it is a hard threshold at several positions.
The interviews are structured and short. Fifteen minutes per club, formally, plus everything informal around it.
The drills themselves are covered on the scouting terminology page — in short, they are best used as filters rather than rankings.
March: free agency, then pro days
The new league year opens in mid-March and free agency reshapes team needs overnight. A club that spent February being mocked a receiver signs one, and every board that had them taking a receiver is instantly stale. This is the single largest source of churn in mock drafts, and it is entirely predictable.
Compensatory pick awards are announced in the same window — see how compensatory picks work for why some clubs sit out the opening week of free agency deliberately.
Pro days run from March into early April on campus. A prospect works out in familiar surroundings, on his own turf, often running only the drills he chooses. Timing is by hand rather than by the combine's electronic system, and hand timing reads faster. Treat a pro day number as a different unit of measurement from a combine number, not a better version of one.
The exception: pro days are where injured players who missed the combine finally test, and where prospects not invited to Indianapolis get seen at all. For those two groups the day is decisive.
April: visits and the final board
Each club may bring up to thirty draft-eligible prospects to its facility for a formal visit. Thirty is not many, and clubs use them deliberately — for medical rechecks, for players whose character or intelligence needs a closer look, and for prospects they are seriously considering. Local players can generally be worked out without consuming one of the thirty.
Visit lists leak, and they are one of the few genuinely informative leaks of the cycle, precisely because there are only thirty of them. They are also the easiest thing in the world to use as misdirection, which is why they should be read as evidence of interest rather than intent.
The final week is spent stacking the board and, more importantly, war-gaming trades: what to do if a given player is there at a given pick, what a move up costs, which clubs behind you want the same position.
The draft itself runs Thursday to Saturday in late April. Rookie minicamps follow within a couple of weeks, and the undrafted signings made in the hour after the seventh round often produce more roster spots than the draft class did.
How to read a mock draft
A mock draft is a prediction of what clubs will do. A big board is a ranking of how good players are. They are different documents and most arguments about mocks come from treating one as the other. A mock that has a player going twelve places below his big-board rank is not a contradiction; it is a claim about the market.
Consensus boards — aggregations of many public rankings — are useful for exactly one thing: telling you where the public conversation is. They are not a wisdom-of-crowds estimate, because the crowd is not independent. Public evaluators read each other, watch the same widely available tape and cite the same reporting, so the errors correlate. A consensus board is closer to an average of overlapping opinions than to a poll.
Three questions separate a useful mock from a list of names:
Does it explain the constraint? "Team takes best available" is not analysis. A good mock knows which contracts expire, who was signed in March, and which scheme the coordinator actually runs.
Does it handle trades honestly? Every draft has trades in round one. A mock with none is not wrong so much as incomplete, and the moment a real trade happens every pick after it is void.
Is the author sourced or projecting? Both are legitimate. They are not the same thing, and the accuracy profile is completely different. Late-April mocks from reporters encode real information about visits and medicals. February mocks from anyone encode a ranking of players.
The honest summary is that individual mock picks are unreliable and the aggregate is informative. Nobody gets most of round one right. The value is in the range — the cluster of clubs a player is linked to, the position groups that keep appearing in the same slots — not in the specific pairings.