The Recreation Yard was the yard used by inmates of Alcatraz Federal Penitentiary between 1934 and 1963. It is located opposite the Dining Hall south of the end of D-Block on a raised level surrounded by a high wall and fence above it. Guard Tower #3 lay just to the west of the yard. The gun gallery was situated in the yard, mounted on one of the dining hall's exterior walls. The recreation yard faced the mainland.
In 1936, the previously dirt-covered yard was paved. The yard was part of the most violent escape attempt from Alcatraz in May 1946 when a group of inmates hatched a plot to obtain the key into the recreation yard, kill the tower guards, take hostages, and use them as shields to reach the dock. During the Occupation of Alcatraz in 1970, between 400 and 700 Native Indians assembled in the recreation yard and demonstrated.
Inmates were permitted out into the yard on Saturdays and Sundays and on holidays for a maximum of 5 hours. Inmates who worked seven days a week in the kitchen were rewarded with short yard breaks during the weekdays. Badly behaved prisoners were liable to having their yard access rights taken away from them on weekends.
The prisoners of Alcatraz were permitted to play games such as baseball, softball and other sports at these times, and intellectual games such as chess. Basketball also appears to have been played on the yard judging by the markings which are still visible on the yard today. Baseball and softball were the most popular. Because of the small size of the yard and the diamond at the end of it, a section of the wall behind the first base had to be padded to cushion the impact of inmates overrunning it. Inmates were provided gloves, bats, and balls, but no sport uniforms. In 1938, there were four amateur teams, the Bees, Oaks, Oilers, and Seals, named after Minor League clubs, and four league teams named after Major League clubs, the Cardinals, Cubs, Giants, and Tigers. Bank robber and kidnapper Volney Davis was a pitching ace for the Oilers, while Lorenzo Murrietta, doing 40 years for assault and robbery, was the best batter in Alcatraz league play. He had a .402 batting average, with 9 home runs and 45 RBIs for the Cardinals. Although many of the inmates relished the opportunity to exercise on weekends, violence occasionally occurred, often race related. A notable riot occurred on May 20, 1956 over racial taunts on the diamond between a white and black prisoner during a softball match.