Australia cricket: Usman Khawaja says he has not 'thrown anyone under the bus' with claims about ball-tampering scandal

Usman Khawaja says he made promise to friend David Warner that he would tell the truth about the Sandpapergate scheme; former Australia batter says he initially wanted to come clean in 2018 but was talked out if by Steve Smith; Khawajas claims come ahead of release of his book