Rob Sperring

Robert Walter Sperring (born October 10, 1949) is a former professional baseball player who played for the Chicago Cubs from 1974 to 1976 and the Houston Astros in 1977. He was involved in a pair of transactions separated by $1 1/2$ months of each other just before the start of the 1977 season. He was traded along with Bill Madlock from the Cubs to the San Francisco Giants for Bobby Murcer, Steve Ontiveros and minor-league right-handed pitcher Andy Muhlstock on February 11. He never appeared in a regular-season game with the Giants who dealt him along with Willie Crawford to the Astros for Rob Andrews and cash during spring training on March 26.