The ornamental design for a pokertabletop, as shown and described.
FIG. 1 is a perspective view of the poker table top;
FIG. 2 is a front elevation view of the poker table top; the rear elevation and side elevation views being substantially identical due to the symmetry of the poker table top; and,
FIG. 3 is a top plan view of the poker table top with the bottom view being a mirror image except for the absence of surface ornamentation, the rectangular poker chip holders and circular cup holders.
The portions of the poker table top design that are illustrated with broken lines do not form a part of the claimed design. The claimed design does not include the underside of the table top illustrated in FIG. 3.