March 4, 1991: The Hartford Whalers shocked their fan base when they sent Ron Francis, Grant Jennings and Ulf Samuelsson to the Pittsburgh Penguins for John Cullen, Jeff Parker and Zarley Zalapski.
At the time, many believed the Whalers got the better end of the deal. With a potential 100-point scorer in Cullen and top draft pick in Zalapski, there was much to be happy about. Losing Francis seemed to hurt, though.
However, after the Penguins went on to win consecutive Stanley Cup titles in 1991 and 1992, it became clear who got the upper hand.