Player memberships design considerations

Examples of different types of player/team relationships from different sports.

Please add your examples here!

Organisation model: https://www.w3.org/TR/vocab-org/

To do. Pull out pertinent bits.

Squad registeration rules football (for examples): https://medium.com/garden-of-eden/squad-registration-rules-in-english-and-european-football-c0225014a279

...at the beginning of 2018/19 season, on an 18-player team sheet in every league or playoff match, a team in the Championship, League One, or League Two has to nominate

Minimum of 7 homegrown players [3], and
Minimum of 1 club-developed player OR name up to 6 substitutes (rather than 7) in the game

Example of person to squad (or do we call it roster relationships) https://www.premierleague.com/players/4112/Eric-Dier/overview

What types of memberships do we need? The person to team from when they sign until they leave. Person to roster (competition specific)? Person to team sheet?