Sirott began his career in radio as a summer vacation fill-in disc jockey for WBBM-FM in 1971 before moving to WLS (AM) in 1973.
After five years at WBBM, Sirott took a job with the CBS newsmagazine West 57th, although the network allowed him to remain based in Chicago.
[2] Sirott left West 57th in 1988, telling the Chicago Sun-Times in an article that ran on December 22, 1987: "If ('West 57th') were more of a personality-oriented show, and if I had the opportunity to do some live things, I'd be able to withstand it longer.
[5] It was ranked high in the Nielsen ratings, and fans were taken aback when they learned that the show was unceremoniously cancelled and renamed Fox News in the Morning.
"[5] Sirott was removed as co-host with 2½ years remaining on his contract, and he was nominally kept on WFLD's payroll to develop new programming for Fox stations and the company's syndication division.
However, on June 11, 2009, Sirott left WMAQ-TV after he and the station were unable to come to financial terms in the wake of Saunders' departure.
[9] On April 12, 2007, Chicago radio station WGN announced that it was reviving The Noon Show with Sirott as its host.
[12] Sirott also hosts "Icons of the Ivy," a program highlighting the legendary figures in the history of the Chicago Cubs.