Connection (Staying Connected in the Swing)

Coaches use connection to describe timing between body parts. The legs and hips start the swing. The torso follows, and the arms and bat come last. When the arms fire too early, the barrel flies away from the body. This is called casting, and the swing gets long. When the body turns but the arms lag behind for too long, the barrel drags. Both lose bat speed and make it hard to adjust.

Some swing sensors put a number on it. They measure the angle between the bat and the upper body at the start of the swing and again at contact. The idea is that a consistent relationship means the body is driving the bat. Readings vary by device. Use them to compare your own swings, not to hit one magic number.

Bat lag is a related idea. In a good swing the barrel trails the hands as they move forward, then whips through contact. That lag stores speed. A connected, short swing matters in fast pitch. At higher levels the pitch arrives in about half a second. Many coaches use tee work with a pause at launch, or a towel held under the front arm for a few swings, as feel drills. Others think those drills are too restrictive and teach connection through rotation work instead.