Throughout his tenure as US men's national team manager, Pochettino has needed to be experimental in the heart of the park. The player pool he inherited had a first-choice midfield trio – Tyler Adams, Weston McKennie, and Yunus Musah – with few adequately tested alternatives.
There has since been ample rotation, testing partnerships and combinations. Now, as the World Cup approaches, one thing has become clear: this World Cup squad's harshest cuts will come in midfield, where Pochettino considers the most important position on the field.