The ornamental design for a combined puttergrip and ball retriever, as shown.
FIG. 1 is a front view of a combined putter grip and ball retriever embodying my new design and showing the grip on the upper end of a golf club shaft;
FIG. 2 is a first side view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a back view thereof;
FIG. 6 is a second side view thereof; and,
FIG. 7 is a perspective view thereof.
The broken line showing of the upper end of a golf club shaft is included for the purpose of illustrating environmental structure and forms no part of the claimed design.