How do junior rankings work?

Tennis Canada's rating and ranking page says rankings use results within a given time frame, typically a rolling 52-week period. A ranking is a player's position within a group, such as girls under 12. Players earn points only by winning a match and advancing to the next round, and rankings depend mainly on how many tournaments a player enters and how far they go. For full junior ranking details Tennis Canada points to the National Bank Rankings website (nationalbankrankings.com).

Tennis Newfoundland and Labrador adds that:

• a junior player's total points are based on their five best results in a rolling 52-week period, and juniors can play more events but only the best five count
• only junior-classed tournaments count toward junior totals
• National Bank Rankings use four categories: Junior (age based, 18 and under), Adult (skill based), Masters (age based, 30 and over) and Open (available to anyone)
• provincial events are star rated, and the higher the star value, the more points are awarded
• each tournament's Playing Ops document sets any play-up rules

Sources: tenniscanada.com/compete-perform/rating-ranking-systems and newfoundland.tenniscanada.com/for-players/competitive-juniors. The provincial details come from an Atlantic provincial page and may differ in other provinces.