Former Amazing Race contestant and Mix 102.3 announcer, Mel Greig, who turns 30 this week, will leave Adelaide for Sydney to co-host Southern Cross Austereo’s nationally syndicated Hot 30 Countdown with Matty Acton. She’ll also appear on the TV program produced for SCA’s Ten affiliates. Mel intends to maintain her connection with the Australian Radio School and her North Adelaide AFL star boyfriend Steven Pollock.