Bob Merrick's association with lacrosse began at Gilman School in Baltimore where he won championships in 1949 and 1950, as well as a second team All-Maryland selection in 1950. As a four-year varsity player at Yale, where he won division championships in 1952, 1953 and 1954, Merrick earned All-New England honors three times. He started for the winning North team in the 1954 North/South Collegiate All-Star Game. Merrick was a three time club all-star while playing for Mt. Washington for six years, winning national club championships in 1958, 1959, 1960 and 1962. In 1965 and 1966, he was an assistant coach for Mt. Washington, and represented the USA as a player in the 1967 World Championship.
As chairman of the All-American selection committee from 1967-1985, Merrick developed the modern selection process for the nation's top collegiate lacrosse players. A former director of the Lacrosse Foundation, Merrick received the Gelston award in 1980 and the USILA Man-of-the-Year Award in 1982. Bob Merrick passed away in 1990.