Donovan played in Baltimore for many years . `` I do n't know , I guess so , '' the affable Donovan deadpanned . He was elected to the Pro Football Hall of Fame in 1968 . Donovan led the Baltimore Colts to world championships in 1958 and 1959 . The cause of Donovan 's death was not immediately disclosed .
Donovan played in Baltimore for many years . He was elected to the Pro Football Hall of Fame in 1968 . Donovan led the Baltimore Colts to world championships in 1958 and 1959 . The cause of Donovan 's death was not immediately disclosed .