The traps need focused retraction and depression work to prevent imbalances. For this exercise, start in the regular seated row position while making sure the back is arched and the chest pushed up.
From here, squeeze the shoulder blades together and hold for several seconds. By focusing on pushing the chest up and out, the shoulder blades are more easily depressed.
Joe DeFranco is a busy man. Right now he's training sixty high school athletes, thirty college athletes, and ten professionals. NFL agents keep his phone ringing all day long