Former Australian Test great Alan Davidson has commended Cricket Australia’s decision to replace national coach Mickey Arthur with Darren Lehmann only a few days before the Ashes series, saying that this will give the tourists a fighting chance in the Tests.Insisting that Lehmann’s Test-playing experience, coupled with his success as the coach of the Queensland team, would prove invaluable when the first Test begins at Trent Bridge, Davidson said that Lehmann could help Australia achieve success in the Ashes, the Sydney Morning Herald reports. He said that Lehmann is a tough cookie and his appointment is ideal.