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getAccountSports: function getAccountSports(accountId, callback) {
    var allSports = ['lacrosse', 'soccer'];
    var result = [];
    
    Account.findOne(accountId).populate('events').then(function(account) {
      
      // if admin return all sports.
      if (account.type === 'admin') {
        return callback(null, allSports);
      }      
      // from events
      if (account.events.length) {
        account.events.map(function(event) {
            if (result.indexOf(event.sport) === -1) {
              result.push(event.sport);
            }
        });
        
        return callback(null, result);
      }

      // from recruits.
      MyRecruitItem.find({owner: accountId}).exec(function(err, recruits) {

        var playerIds = [];
        if (err || !recruits) {
          return callback(null, allSports);
        }
        recruits.map(function(recruit){
          playerIds.push(recruit.player);
        });

        TeamPlayer.find({player: playerIds}).exec(function(err, teamPlayers) {
          if (err || !teamPlayers) {
            return callback(null, allSports);
          }

          teamPlayers.map(function(teamPlayer) {
            
            if (result.indexOf(teamPlayer.sport) === -1) {
              result.push(teamPlayer.sport);
            }
          
          });
          return callback(null, result);
        }); // TeamPlayer.find
      });


    }).catch(function(err) {
      return callback(null, allSports);
    });
  },