In September 2001, Roberts was recruited by CanWest's Toronto division to be a co-anchor with Beverly Thomson of the station's supper time news show. Roberts arrived just a week before the terrorist attacks of September 11, 2001. The news team included meteorologist Michael Kuss and sports director Jim Tatti. From June 2010 until August 2013, his co-anchor was former CITY-TV anchor Anne Mroczkowski, who replaced Anne-Marie Mediwake after she moved to CBC News. Roberts was the show's sole anchor from August 2013 until his resignation. He also hosted Global Ontario's 11 pm news broadcast for several years. As well as "Focus Ontario", the country's longest running political show, which he co-hosted with former Ontario Progressive Conservative leader John Tory, now the Mayor of Toronto.