David Warner accuses Cricket Australia of a Sandpapergate cover-up, while hitting back at Pat Cummins for dismissing Usman Khawaja's claims. If that's correct, then how can CA push the idea that the bowlers didn't know?” Warner wrote on Instagram.“It looks like they had decided who they wanted to blame from the very beginning, ran a shoddy investigation to serve the purpose, and now they want to maintain the false narrative that the.