Resolves to the sum of Games Started (GS) for both regular season and playoffs as listed on the Passing table on each player’s profile page on 

1% for each 1 game started. For example, a player who has started 45 regular season games and 5 playoff games would resolve to 50% upon their career ending. 100+ games started is immediately eligible to resolve 100% (YES).

End of career = announced retirement or otherwise inactive as indicated by Pro Football Reference (not 

https://www.pro-football-reference.com/years/2022/draft.htm

Answers may included undrafted quarterbacks who were rookies that year.