Johnson driven to succeed

Simple answer would be this: express left-arm bowlers, particularly those with the ability to swing the ball, have been the rarest of commodities in Australian cricket for more than a century. Surely, though, there is more to Johnson's rise than a mere attempt by administrators to match a man with a job description. Perhaps, then, the answer lies in the battles Johnson has waged, and seems to be winning, against his body and mind.