[2][3] Rondeau began his career as a news reporter and anchor in Cortez, Denver, and then Phoenix.
[4] Rondeau joined KOMO radio in Seattle as sports director in 1977, after passing on an offer from local competitor KIRO which was looking for a news reporter.
[2][4] The next year, KOMO acquired the broadcast rights for both Washington football and basketball games.
Earlier, he served as the play-by-play announcer for the original Seattle Sounders for two years beginning in 1979, despite having no familiarity with the sport of soccer.
[11] King County proclaimed Roundeau's last home broadcast of the Apple Cup on November 25, 2017, as "Bob Rondeau Day.