Parris Island, South Carolina, Camp LeJeune in North Carolina, and Washington, D.C. At Parris Island, Clemente received recruit training with Platoon 346 of the 3rd Recruit Battalion. The rigorous Marine Corps training programs helped Clemente physically; he added strength by gaining ten pounds and said his back troubles (caused by being in a 1954 auto accident, see below) had disappeared. He was a private first class in the Marine Corps Reserve until September 1964. Pittsburgh Pirates, 1950s The Pirates struggled through several difficult seasons through the 1950s. They did have a winning season in 1958, their first since 1948. Clemente debuted with the Pirates on April 17, 1955, wearing uniform number 13, in the first game of a doubleheader against the Brooklyn Dodgers. Early in his career with the Pirates, he was frustrated by racial and ethnic tensions, with sniping by the local media and some teammates. Clemente responded to this by saying "I don't believe in color." He said that, during his upbringing, he was taught never to discriminate against someone based on ethnicity. Clemente was at a double disadvantage, as he was a Latin American and Caribbean player whose first language was Spanish and was of partially African descent. The year before, the Pirates had hired Curt Roberts, their first African-American player. They were the fifth team in the NL and ninth in the major leagues to do so, seven years after Jackie Robinson broke baseball's color line by joining the Dodgers. When Clemente arrived in Pittsburgh, Roberts befriended him and helped him adjust to life in the major league, as well as in the Pittsburgh area. During his rookie season, Clemente had to sit out several games, as he had suffered a lower back injury in Puerto Rico the previous winter. A speeding, drunk driver rammed into his car at an intersection. He finished his rookie season with a .255 batting average, despite trouble hitting certain types of pitches. His defensive skills were highlighted during this season. The following season, on July 25, 1956, in Forbes Field, Clemente hit the only documented walk-off, inside-the-park grand slam in modern MLB play. Pittsburgh-based sportswriter John Steigerwald said that it "may have been done only once in the history of baseball." [Emphasis added.]) Clemente was still fulfilling his Marine Corps Reserve duty during spring of 1959 and set to be released from Camp Lejeune until April 4. A Pennsylvania state