The ornamental design for a sportsmemorabiliaholder, as shown and described.
FIG. 1 is a right side perspective view of a sports memorabilia holder showing my new design, the broken-line disclosure of a basketball being for illustrative purposes only and forming no part of the claimed design;
FIG. 2 is an additional side perspective view thereof;
FIG. 3 is a front elevational view thereof, the broken-line disclosure representing portions of the holder which form no part of the claimed design;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
The broken lines shown throughout the views represent the portions of the design which form no part of the claim.
The stippling shown throughout the views is for illustrative purposes only.