FIG. 1 is a front perspective view of a kneecap guard showing my new design, the leg shown in broken lines is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a left side elevational view thereof, in a closed position;

FIG. 3 is a front elevational view thereof, in a closed position;

FIG. 4 is a right side elevational view thereof, in a closed position;

FIG. 5 is a rear elevational view thereof, in a closed position;

FIG. 6 is a top plan view thereof, in a closed position; and,

FIG. 7 is a bottom plan view thereof, in a closed position.