About Downfield

Football research from Optera: the numbers, where they come from, and how they are checked.

Coverage: NFL play-by-play since 1999, 7,393 games. College box scores and season rosters since 2004.
Checks: 7,376 of 7,393 NFL play logs add up to the official final score. The 17 that do not are withheld. Methodology
The score: Downfield Score v7.0, published with its weights and a season-to-season stability check. Score check
Updates: The app adds new games once nflverse publishes their play-by-play. Every figure on this site states the date it runs through.
Access: This site and the app are open to everyone. In the app, a free Optera One account opens college and lets Ask reword a question it cannot place.
Sources: nflverse, CC BY 4.0: NFL play-by-play, player and team stats, rosters and schedules. Retrieved Oct 9, 2026.
Pro Football Reference, via nflverse: snap counts. Retrieved Oct 9, 2026.
CollegeFootballData.com: college box scores, season rosters and draft picks. Retrieved Oct 26, 2026.
Independence: Downfield is not affiliated with the NFL, the NCAA, nflverse, CollegeFootballData.com or ESPN.
Contact: Questions, corrections and press: [email protected]