Roughly one bowler in eight throws left-handed, and roughly zero league shirts are built for it.

The armhole gusset

The extra panel that lets the shoulder travel through a full swing.

On the wrong side it does nothing at all.

The back hem

Cut longer so the shirt stays tucked through the approach.

A hem that lifts on every delivery is a hem cut for the other arm.

The pocket and the patch

Both belong on the non-throwing side, where the ball does not pass.

This is the change bowlers feel first.

It costs nothing to ask

One column on the roster. Names, sizes, hands.

That column is the difference between a shirt and the right shirt.