Step 1

Blue is on offense. Red is on defense, forcing righty forehand (lefty backhand). Notice how the defense on the cutters have their bodies on the open side.

Step 2

The defender on the disc is in the correct position. They are doing their job correctly because the thrower is able to to the OPEN SIDE. Yay!

Step 3

Let's see what happens if the defender on the disc shifts over too much to the open side.

Step 4

The defender on the disc shifts over too much...

Step 5

The thrower is now able to throw to the BREAK side. This is really BAD.

Step 6

Thrower throws a break. :(

Step 7

This is the result. Easy score for the other team. Our defense fell apart due to break throw.