Search a array of objects

I have the following code:

teams = [];
teams[0] = new Object();
teams[0].name = "Man Utd";
teams[0] = [];
teams[0][0] = new Object();
teams[0][0].wins = 2;
teams[0][0].defeats = [];
teams[0][0].defeats[0] = [3,9,2,1];
teams[0][0].pts = 4;

teams[1] = new Object();
teams[1].name = "Man City";
teams[1] = [];
teams[1][0] = new Object();
teams[1][0].wins = 2;
teams[1][0].defeats = [];
teams[1][0].defeats[0] = [8,7,3];
teams[1][0].pts = 12;

How can I search for the array defeats for each team...

Search a array of objects WordPress ...