The ornamental design for a baseballcap with rectangularpatch, as shown and described.
FIG. 1 is a top perspective view of a baseball cap with rectangular patch, showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a right-side elevation view thereof, in which the left-side is a mirror image of the right-side; and,
FIG. 5 is a top plan view thereof.
The even-sized broken lines shown in the drawings depict portions of the baseball cap with rectangular patch that form no part of the claimed design, while the uneven-sized dash-dot-dash broken lines represent the bounds of the claimed invention, the dash-dot-dash broken lines themselves forming no part of the claimed design.