Throughout his career, Lackey compiled a win-loss record of 166–127, recorded 1,969 strikeouts, and maintained an earned run average (ERA) of 3.93 over 2,487.1 innings pitched. In 2011, he suffered an elbow injury that severely affected his performance and limited his playtime. As a result, he underwent Tommy John surgery in 2012, missing the entire season.

Tenure with the Chicago Cubs

John Lackey signed with the Chicago Cubs and played with them from 2016 to 2017. His experience contributed to the team's depth, and he was part of the 2016 roster that famously won the World Series—marking the Cubs' first championship since 1908. At the peak of his tenure with the Cubs, Lackey earned an annual salary of approximately $16 million.

Media Presence and Public Image

Although generally recognized for his competitive nature, Lackey has also been the subject of public satire. A notable example is a humorous article published by "The Onion" that jokingly portrayed his alleged superstitions. The piece was satirical and not a factual account, but became a reference point in discussions about his intense game-day rituals.

Personal Life

John Lackey married Krista Clark in 2008. Krista had two children from a previous relationship, and together the couple had one daughter. In 2011, amid personal challenges, including Krista's cancer treatment and ongoing chemotherapy, Lackey filed for divorce. The divorce was finalized in 2012.

Outside of baseball, Lackey made a brief foray into the entertainment industry with a cameo appearance in a 2011 music video alongside Red Sox teammates Tim Wakefield and Josh Beckett. Despite moments of public scrutiny, he has largely maintained a private and grounded personal life.