Team_Type

idTypeName
1National
2Club
3Youth

Sports

idSportName
1Football
2Rugby

Players

idNameAgeTeamTypeIdSportId
(→ Team_Type.id)(→ Sports.id)
1John Doe2811
2Jane Smith2622
3Alice Brown3011
4Bob Johnson2922
5Charlie White2711

FitnessLevels

idLevelName
1Elite
2Intermediate
3Beginner

PlayerStats

idPlayerIdFitnessLevelIdStatsText
(→ Players.id)(→ FitnessLevels.id)
111Average stats
222Above average stats
333Below average stats
441Excellent stats
552Impressive stats