Why has Jon Lester’s 2015 season been overlooked?

As the major offseason signing, the big left hander was supposed to be the ace of the Cubs. Whether it was Jake Arrieta’s breakout second half or the dead arm issue in April, the perception of Lester’s success was overlooked. However, Lester was quietly one of the best starters in the National League in 2015.

December 10th, 2014. This day changed the course of Cubs recent history. After another losing season, the Cubs were looking to build off of their strong second half by being players in free agency for the first time since the Jim Hendry era. Their big catch was a familiar face to President of Baseball Operations Theo Epstein and General Manager Jed Hoyer. On that December day, the Cubs…