[2] Masur started his radio career in Peoria, Illinois working at co-owned stations WMBD and WKZW (now WPBG).
Starting in 1999, Masur began to work exclusively for WGN, hosting Chicago Cubs pre-game and post-game shows and anchoring morning and evening drive slots with sports coverage;[4] in addition, he substituted for play-by-play announcer Pat Hughes during some Cubs games.
[citation needed] Masur was also the radio voice of Loyola University Chicago men's basketball from 2002 until working at XEPRS-AM.
[4] In 2012, he was also named as secondary play-by-play announcer for Padres telecasts on Fox Sports San Diego, occasionally substituting for lead TV announcer Dick Enberg in addition to working the XEPRS radio broadcasts.
[5] WGN chose not to renew the rights for the White Sox after the 2020 season, and new rightsholder WMVP hired Cubs television voice Len Kasper to take over the team's play-by-play duties.