Warner has 'learned a valuable lesson'

[ad_1] Speaking for the first time since his emotional press conference in Sydney more than a month ago, Australia's former vice-captain David Warner said he has "learned a valuable lesson" after the ball-tampering scandal in South Africa in March. Warner was banned from playing international and domestic cricket for a year along with Steven Smith, for their respective roles in tampering with the ball during the Cape Town Test. "Sometimes with our society, something has to happen for the worst for people to come out and sh…