Question: Mark McGrath has played for the Washington Redskins and a team that joined the NFL as an expansion team in what year?
Related documents: [0]  [DOC] The Seattle Seahawks are a professional American football franchise based in Seattle, Washington. The Seahawks compete in the National Football League (NFL) as a member club of the league's National Football Conference (NFC) West division. The Seahawks joined the NFL in 1976 as an expansion team. The Seahawks are owned by Paul Allen and are currently coached by Pete Carroll. Since 2002, the Seahawks have played their home games at CenturyLink Field (formerly Qwest Field), located south of downtown Seattle. The Seahawks previously played home games in the Kingdome (1976–1999) and Husky Stadium (1994, 2000–2001). [END] 
[1]  [DOC] Mark Allen McGrath (born December 17, 1957 in San Diego, California) is a former American football wide receiver in the National Football League for the Seattle Seahawks and the Washington Redskins. He played college football at Montana State University. [END] 
Answer: 
1976
1976