When the Australian cricketers of the 1970s wanted to benchmark their earnings, they didn’t need to look too far. Rod Marsh was one of the great Australian cricketers, a brave and aggressive batsman and wicketkeeper. “Caught Marsh, bowled Lillee” became, in the 1970s, a standard refrain in Test cricket, with Marsh behind the stumps and Dennis Lillee piling in. The combination was responsible for 95 Test wickets. They were among the best in the game. Marsh came from a sporting family. His brother Graham was a golfer, but he had achieved a lot less in his golf career than his…