Making money from his two Olympic gold medals meant just as much work for Kieren Perkins as the endless laps he swam in the pool.
The Australian sporting great said on Monday that at the risk of sounding like a "grumpy old man", the lessons he learned back in the 1990s hadn't changed.
His comments at Melbourne's SportNXT conference come in the wake of the Glasgow Commonwealth Games and the financial incentives from mining magnate Gina Rinehart for the Australian swimming team.
