He joined the Pat Metheny Group in 1981. Prior to joining Metheny, he was a member of the Simon-Bard Group and the Fred Simon ensemble. Rodby continues to collaborate with Simon as of 2011[update].
Rodby studied bass at Northwestern University, a student of Warren Benfield of the Chicago Symphony Orchestra. While at Northwestern, Rodby fell under the influence of master jazz artist Rufus Reid who both taught at NU and also studied with Benfield. Rodby quickly became the call bassist for the Jazz Showcase in Chicago, playing with many famous jazz artists. Rodby currently lives in Chicago, Illinois.
He has collaborated with Pat Metheny and Lyle Mays. In 2011 Rodby joined forces once again with drummer Paul Wertico (alongside Israeli musicians Danny Markovitch (sax), and Dani Rabin (guitar)) on Marbin's record Breaking the Cycle.