wingback (in the single wing).

On the player and team pages, the words "all-pro" now mean first-team all-pro, according to the Associated Press all-pro team from 1940--present or the UPI team from 1931--1939.

two-point conversions made.

attempts (either passing or rushing) per game.

adjusted net yards per passing attempt: (pass yards + 20*(pass TD) - 45*(interceptions thrown) - sack yards)/(passing attempts + sacks). See AY/A. Note that we are now using 20 yards per TD instead of [..]

the number of times the player was named first team all-pro.

assists on tackles. See tackles. Pre-1994, assists are grouped with tackles. From 1994 to 2000, assists were unofficial but consistently recorded and should be complete in our database. From 2001 to t [..]

attempts. If in a rushing table, this is rushing attempts. If in a passing table, it means passing attempts.

approximate value. This is our attempt to put a single number on each player-season since 1950 so that we can (very approximately) compare across years and across positions. See this blog page for all [..]

on coach's pages, this number is the average finish, within the division, of that coach's teams.