The acquisition of Yoenis Cespedes in 2015 launched the New York Mets into the postseason where they would eventually land in the World Series. As great of a trade as that was, another deal made around the same time also played a pivotal role in the trip to the championship game.
On August 30, 2015, the Mets pulled off a sensational trade with the Arizona Diamondbacks for Addison Reed. In exchange for Miller Diaz and Matt Koch, the Mets received a reliever who became essential in their division title.
Reed pitched in 17 games for the 2015 team.