The AFL is included, but not any other non-NFL leagues. For some sense of perspective, the team that the athlete played the most games for is in parentheses. Non-current abbreviations used: RAI: LA Raiders, RAM: LA Rams, CRD: Chicago/St. Louis Cardinals, DTX: Dallas Texans (NFL), DTX-A: Dallas Texans (AFL, became Chiefs), NYY: NY Bulldogs/Yanks, NYT: NY Titans (Jets), '50 BAL: Baltimore Colts (folded in 1950); BAL is used for both the later Baltimore Colts and Ravens. HOU in all cases here refers to the Oilers.