Gadzira shanduro yakaoma zvikuru yemutsara uyu Ralph Greenleaf (akaberekwa 3 November 1899 muMonmouth, Illinois, akafa 15 March 1950) akanga ari 20 nguva World Pocket Billiard shasha.
Chokwadika, shanduro yakaoma zvikuru yemutsara wacho ndeiyi "Ralph Greenleaf (akaberekwa musi wa3 Mbudzi 1899 muMonmouth, Illinois, akafa musi wa15 Kurume 1950) akanga ari mutambi wenhabvu weAmerica, mukwikwidzi wenguva makumi maviri weWorld Pocket Billiards Champion, ane mano uye charisma zvakatonga mutambo uyu panguva yaaifara zvikuru. "