As teams compete in weekly Team Tournaments, they will earn Prestige. Prestige is used to increase the overall Team Prestige Levels, earning new roster slots for the team. Each level a team earns will earn them an additional roster slot, allowing their teams to grow bigger as they level up.

For example: A Level 1 team has a maximum size of 25 members. A Level 2 team has a maximum size of 26 members, and so on. Here you see the left green arrow pointing to the Prestige Level, and the right green arrow showing you how many positions are on the roster: 

By earning Prestige, both the very best teams in the game, and teams that have been competing in Tournaments the longest will have the largest teams in the game over tim