| season | numeric | NFL season. Defaults to current year after March,
otherwise is previous year. | 
| team | character | NFL team. Uses official abbreviations as per
NFL.com | 
| position | character | Primary position as reported by NFL.com | 
| depth_chart_position | character | Position assigned on depth chart. Not always
accurate! | 
| jersey_number | numeric | Jersey number. Often useful for joins by
name/team/jersey. | 
| status | character | Roster status: describes things like Active, Inactive,
Injured Reserve, Practice Squad etc | 
| full_name | character | Full name as per NFL.com | 
| first_name | character | First name as per NFL.com | 
| last_name | character | Last name as per NFL.com | 
| birth_date | date | Birthdate, as recorded by Sleeper API | 
| height | character | Official height, in inches | 
| weight | character | Official weight, in pounds | 
| college | character | Official college (usually the last one attended) | 
| high_school | character | High school | 
| gsis_id | character | Game Stats and Info Service ID: the primary ID for
play-by-play data. | 
| espn_id | numeric | Player ID for ESPN API | 
| sportradar_id | character | Player ID for Sportradar API | 
| yahoo_id | numeric | Player ID for Yahoo API | 
| rotowire_id | numeric | Player ID for Rotowire | 
| pff_id | numeric | Player ID for Pro Football Focus | 
| pfr_id | character | Player ID for Pro Football Reference | 
| fantasy_data_id | numeric | Player ID for FantasyData | 
| sleeper_id | character | Player ID for Sleeper API | 
| years_exp | numeric | Years played in league | 
| headshot_url | character | A URL string that points to player photos used by
NFL.com (or sometimes ESPN) | 
| ngs_position | character | Primary position as reported by the NextGen stats
API. | 
| week | numeric | The most recent week of that season that a player
appeared on the roster. | 
| game_type | character | The most recent game type of that season that a player
appeared on the roster. | 
| status_description_abbr | character | A code corresponding to a particular NFL status. | 
| football_name | character | The nickname or first name typically used by a
player. | 
| esb_id | character | Player ID for Elias Sports Bureau | 
| gsis_it_id | numeric | Player ID for the GSIS IT API | 
| smart_id | character | Player ID hash for a player’s ESB ID | 
| entry_year | numeric | The year a player first became eligible to play in the
NFL. | 
| rookie_year | numeric | The year a player lost their rookie eligibility. | 
| draft_club | character | The team that originally drafted a player. NA if a
player went undrafted in their draft-eligible year. | 
| draft_number | numeric | The number pick that was used to select a given
player. |