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 S. Kokkalis S.A., a gaming technology supplier and lottery licensed operator. He was also the Vice-President of the Greek football club Olympiacos, and is the Vice-President of the Kokkalis Foundation, a non-profit organization that promotes education and training, culture and social welfare, medical research and information technology, and athletics, both in Greece and abroad. He is Secretary General of Organization Earth, an environmental education NGO. Petros S. Kokkalis Petros S. Kokkalis (; born 1970) is a Greek businessman. Petros Kokkalis holds a B.A. from Hampshire College with a concentration in history; his Division III title was “Making the Love of My People: