Complex sentence: Even though Detroit lost the Stanley Cup, Crozier was awarded the Conn Smythe Trophy (playoffs MVP), becoming the first goaltender to win the award and also the first player to win it in a losing effort.
Split into simpler sentences: Even though Detroit lost the Stanley Cup, Crozier was awarded the Conn Smythe Trophy, which is awarded to the most valuable player in the playoffs. He became the first goaltender to win the award and also the first player to win it in a losing effort.