What is Immaculate Grid?

Immaculate Grid is the American football version of Sports Reference's daily grid puzzle. Nine squares appear with six criteria around the edges—franchises like the Steelers or Eagles mixed with statistical categories such as "50+ Sacks career." You place one player per square who satisfies both its row and column, using nine attempts to complete the board. Eligible players must have appeared in a regular-season or postseason game for the franchise in question.

How to play Immaculate Grid

Tap a logo or category to see its definition and the conditions behind the criterion. Place one player in each square; the player must meet both the row and column criteria. You get nine attempts, one for each square, and every attempt counts, whether correct or not. When you finish, you’ll see your score out of nine and a rarity score based on how obscure your choices were.

Sports Reference's grid relies on precise definitions. When a square says "50+ Sacks career," the tooltip explains what happens if you cross it with a college or a franchise, removing any ambiguity. The rarity score shifts the objective: filling the grid is within reach for a knowledgeable fan, but filling it with names nobody else picked becomes a different challenge. The crest tooltips list defunct franchises and wartime mergers, turning each round into a compact history lesson.

Reading your score

The game records two things: how many squares are correct out of nine, and a rarity score measuring how uncommon your answers were. After the ninth attempt the game stops, though you can continue filling missed squares without affecting your score. A "Today's Results" link shows how you rank among other players that day.

Tips for a stronger result

  • You have nine attempts for nine squares, so a wrong answer permanently costs a square. Fill the intersections you know for certain, and leave guesses until the end.
  • Read each statistical category’s tooltip first. “50+ Sacks career” means the total must have been recorded in the NFL or AFL when paired with a college; college statistics do not count.
  • Check the crest tooltips for a franchise’s former identities and the dates they used them. A Steelers square can include the club’s earlier history, and the 1943 label refers to the season when two franchises merged.
  • Each player can be used only once. Use a player who fits three squares where you have no replacement.

What happens after the ninth attempt?
The game ends and displays two scores: the number of correct answers out of nine and a rarity score. You can still fill incorrect squares afterward, but those attempts no longer count toward your score.

Which players are eligible?
Active or retired players from the NFL, AFL, or AAFC. For a team square, the player must have appeared in a regular-season or postseason game with that franchise.

When does the new grid appear?
Every day at 6:00 a.m. Eastern Time.