Pat Hughes is traded to the Pittsburgh Penguins with Robert Holland. In return, the Montreal Canadiens acquired , Denis Herron and 2nd round draft pick in 1982 (#31: Jocelyn Gauvreau)
March 9, 1981
Pat Hughes is traded to the Edmonton Oilers. In return, the Pittsburgh Penguins acquired , Pat Price
October 4, 1985
Pat Hughes is traded to the Buffalo Sabres. In return, the Pittsburgh Penguins acquired , Randy Cunneyworth and Mike Moller
October 6, 1986
Pat Hughes is traded to the St-Louis Blues. In return, the Buffalo Sabres acquired
March 10, 1987
Pat Hughes is traded to the Hartford Whalers. In return, the St-Louis Blues acquired , 10th round draft pick in 1987 (#207: Andy Cesarski)
