WATCH Matt Shirvington's Highs And Lows From His Olympics CareerBut the track star will be front and centre of the delayed Tokyo 2020 Games as he leads Channel Seven’s afternoon coverage as a commentator.It’s been 21 years since Matt Shirvington donned the green and gold while competing for Australia at the Sydney 2000 Olympics.“I’ve been involved as an athlete and a broadcaster and it’s much harder doing the commentary,” the 42-year-old former sprinter tells WHO with a laugh.“I used to run 100