The ornamental design for a choke-up batting strap, as shown and described.
FIG. 1 is a perspective view of a choke-up batting strap showing my new design in condition of use on a bat;
FIG. 2 is a front elevation view thereof on an enlarged scale;
FIG. 3 is a top plan view thereof, shown in an open position;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is an inverted right side elevation view thereof;
FIG. 7 is a forward end elevation view thereof; and,
FIG. 8 is a rearward end elevation view thereof.
The broken line showing of a bat and hands in FIG. 1 and a bat in FIG. 2 illustrates unclaimed environmental structure only and forms no part of the claim.