Theo Epstein has joined Major League Baseball's commissioner's office as a consultant regarding on-field matters, the league announced Thursday.
Specifically, he will work with analytics experts from the commissioner's office and the teams to determine effects of potential rule changes.
"Theo is one of the most accomplished and thoughtful people in our sport," commissioner Rob Manfred said in a statement. "I am grateful that he has accepted our invitation to complement our ongoing efforts and provide his insights on making the best game in the world even better for the next generation of fans."
Epstein, 47, stepped down as the Chicago Cubs' president of baseball operations in November after nine years with the club. Prior to joining the Cubs, he was general manager of the Boston Red Sox from 2003-11.
"It is an honor to assist the efforts by Major League Baseball and the Competition Committee to improve the on-field product, and I appreciate commissioner Manfred asking me to be a part of these important conversations," Epstein said of his new position. "As the game evolves, we all have an interest in ensuring the changes we see on the field make the game as entertaining and action-packed as possible for the fans, while preserving all that makes baseball so special."
Following his resignation from the Cubs, Epstein said he didn't plan to sign on with another team for the 2021 season. The Philadelphia Phillies were among the teams reportedly interested in hiring him as president of baseball operations before they ultimately landed Dave Dombrowski.