Sports Bob Kuechenberg, key member of 1972 undefeated Dolphins, dies at age 71 January 13, 2019Cesar Brioso, USA TODAYComments Off on Bob Kuechenberg, key member of 1972 undefeated Dolphins, dies at age 71 Bob Kuechenberg, a key member of the 1972 undefeated Miami Dolphins team, has died at age 71, the team announced Sunday morning.