Calder Memorial Trophy
In 1990, Sergei Makarov of the Calgary Flames became the oldest player, at age 31, to win the Calder, even though he had played professionally in the Soviet Union as a member of HC CSKA Moscow.  After that season, the rules for awarding the Calder were amended so that players could only be eligible if they were 26 years old or younger by September 15 of their rookie season.