Riggin Pat

Boston Bruins acquire	Date	Pittsburgh Penguins acquire
Roberto Romano	February 6, 1987	Pat Riggin

Boston Bruins acquire	Date	Washington Capitals acquire
Pat Riggin	November 14, 1985	Pete Peeters

Calgary Flames acquire	Date	Washington Capitals acquire
Howard Walker George White 1982 6th round pick (#118-Mats Kihlstrom) 1983 3rd round pick (#55-Perry Berezan) 1984 2nd round pick (#38-Paul Ranheim)	June 9, 1982	Ken Houston Pat Riggin