David Koch, the co-host of Channel Seven’s Sunrise, has announced his resignation from the breakfast TV role. Koch had been in the host chair since 2002 and, along with co-hosts Melissa Doyle and later Natalie Barr, conducted more than 5,300 shows and interviewed tens of thousands of people. Koch, a passionate supporter of the Port Adelaide AFL team, made the announcement citing his struggle to maintain his early morning routine. He thanked his colleagues and viewers and reminisced about the early days of the show, when they had the freedom to experiment and build something different.