How to place a collection within a model in Backbone.js?

Question

I would like some insight on how one would add structure a collection within a model. My simple app has teams (so a team model and collection of teams) and each team has a bunch

Answer 1

"Now I am confused as to how I would have the Team Collection and Model, correspond with the Player Collection and Model. I.e. according to my design, a third relationship would be that each team would have a collection of players."

Simply add an attribute to your Team Model that'd be a collection of players.

var Team = Backbone.Model.extend({
  initialize: function() {
    // assuming Players a collection of players
    this.set('players', new Players());
  }
});

Now, populating the data is another problem which has a lot of solutions. But doing things that way gives you a strong structure.