Steve Petro from 1973 to 1984. Steve's Pitt nickname was "The Rock," based on Petro, a derivation of the Greek word petros, which means rock. The Pitt Panther mascot's nickname is ROC, in Steve's honor. Steve Petro Stephen Lawrence Petro (October 21, 1914 – August 15, 1994) was an American football guard who played two seasons with the Brooklyn Dodgers of the National Football League (NFL). He was drafted by the Pittsburgh Pirates in the ninth round of the 1939 NFL Draft. He played college football at the University of Pittsburgh and attended Greater Johnstown High School in Johnstown, Pennsylvania. Steve played
Petros Kokkalis Petros Kokkalis Petros Kokkalis (Greek: Πέτρος Κόκκαλης, 1896 - 1962) was a Greek medical doctor, academic and politician, member of the Communist Party of Greece, and Minister in the (internationally unrecognized) Provisional Democratic Government during the Greek Civil War. He was the personal physician to East German leader Walter Ulbricht and is the father of the billionaire businessman Sokratis Kokkalis, one of the wealthiest and most influential people in Greece. He was born in Livadeia, Greece, in 1896, to a prosperous family. He first studied medicine at Athens University and received a PhD from the University of Bern in Switzerland.