BUFFALO, NEW YORK — During a third-down conversion at a Buffalo Bills game, running back Ty Johnson accidentally struck a member of the Bills' own sideline staff, a human the institution had itself stationed at the running area's edge. The man fell. The play entered the record as a conversion; the man did not enter it. Our observation began at the rail.

The sideline colony is arranged by speed. Along the painted boundary the institution stations its slower members, in team garments refreshed annually under local planned aesthetic obsolescence, with headsets, clipboards, and one white line. The fast humans train to find gaps; the boundary is where gaps end. It therefore stations its slowest members exactly there. Every local we asked called this sensible, in the tone reserved for weather.

Our count, opened at the first whistle, had logged eleven headset adjustments and four clipboard retrievals when contact occurred. Johnson, ball in hand on third down, angled for the boundary, where the staff member stood; they met at the speed the position requires. The man went down; Johnson went on, because the ball had somewhere to be. The man occupied the ground for six seconds; the game stopped for zero. At minute nine, the sideline produced its first apology. It came from the struck man to his striker, delivered with the eye contact of a man returning a borrowed pen. A second followed forty seconds later, from a colleague, on his behalf, in case the ground had not been properly thanked. The count closed at two.

The play resides in the league's statistical bank, licensed to store numbers. It stores the ball's: third down, conversion, carrier. The staff member — employed by the institution, nameable on request, positioned by that same institution at the exact coordinates of the impact — appears in no category. The categories were drawn around the ball, and he was not holding it. The bank's nearest form is titled Ball, Carried. No form is titled Man, Removed. The colony counts what the ball does. It keeps no column for what the ball goes through.

"He's part of the field, really," said Dennis Kowalczyk, a season-ticket holder of twenty-two years. "You don't name the field. If he wanted a name out there, he should have been carrying something." Ray Deluca, a former Bills equipment assistant (nine seasons), was serene: "They issue you the jacket so you belong to the play. They do not issue you to the play. The difference is the white line, and the white line is paint. Nine years on that line. It never learned my name either."

The window closed at the final whistle. Final tally: headset adjustments, eleven; clipboard retrievals, four; apologies, two; collisions under study, one; record mentions of the man, zero. Our subsidiary ledger stays open — status, upright; function, stationary; name, held by his institution, unspent. Until the colony amends its columns, we file him as its record does: terrain. We will keep counting. The locals settled his title some time ago. You don't name the field.