Sandberg quit Friday with a 119-159 career record over parts of three seasons leading Philadelphia. His only full season was in 2014, when the Phillies finished with a 73-89 record.
The 55-year-old is a Hall of Fame second baseman with the Cubs. Philadelphia was his first management job.
Philadelphia had low expectations this season, with little to no chance of contending and big challenges surrounding moving high priced players like pitcher Cole Hamels and first baseman Ryan Howard.