Merrick was born in Selly Oak, Birmingham, but grew up in North Warwickshire, where he attended Water OrtonJunior School and Coleshill Grammar School. He joined West Bromwich Albion in July 1966, turning professional in August 1967. He made his senior debut in September 1968 in a League Cup tie against Peterborough United and in the same year won three England youth caps. In 1975 the team loaned Merrick to second division club Peterborough. At the end of the season, Merrick moved to the USA where he signed with the Minnesota Kicks of the NorthAmerican Soccer League. Merrick remained with the Kicks through the 1979 season when he moved to the Los Angeles Aztecs. Merrick moved again at the end of the season, to the San Jose Earthquakes for the 1981 season. However, after twelve games, the Earthquakes traded Merrick to the Minnesota Kicks. At the end of the 1981 season, the Kicks traded Merrick to the Toronto Blizzard for the 1982 season. In 1983, the U.S. Soccer Federation, in coordination with the NASL, entered the U.S. national team, known as Team America, into the NASL as a league franchise. The team drew on U.S. citizens playing in the NASL, Major Indoor Soccer League and American Soccer League. Merrick left the Blizzard and signed with Team America. When Team America finished the 1983 season with a 10–20 record, the worst in the NASL, USSF withdrew the team from the league.
International
In 1968, Merrick played three times for the England national under-18 football team at the Junior World Cup Tournament in the South of France against Bulgaria, Russia and the Netherlands On 8 April 1983, Merrick earned one cap with the U.S. national team in a 2–0 victory over Haiti. He started the game, but subbed out for Erhardt Kapp in the second half. Present web site and contact can be found at www.kicksbest.com
Coach
In 1983, Merrick retired from playing and joined the coaching ranks with the Minnesota Strikers. At the time, the Strikers played in the NASL, but after the collapse of the league in 1984, the Strikers moved to Major Indoor Soccer League. Merrick continued to coach them through the 1987–1988 season. He is currently the head coach of the University of Minnesotamen's club team. Additionally, he continues to train coaches and young players though his Minneapolis-based academy. In April 2012, Merrick was named head coach of the Eagan High School boys soccer team.