Fine and punishment

Serena Williams has been fined $82,500 for the verbal abuse she gave to an official during the US Open earlier this year. Further punishment could be meted out if she is found guilty of further offences in any of the four tennis grand slams during the next two years: a suspension and a $175,000 fine. Williams' fine is the largest in Grand Slam tennis history, almost doubling the $48,000 fine Jeff Tarango received in the 1990s. At the same time, Williams earned $350,000 from this year's US Open; she has earned $6.5 million in prize money this year; and her career prize money is now heading up towards $28 million (and then there is commercial income on top of that). So, is the fine and punishment Williams has received too much or too little? Has she been targeted because of her position, status and income? Is the punishment consistent with the 'Tarango Tariff'? Is there actually a tariff in tennis to determine how much a player should be fined in such instances? If so, is it clear, transparent and fair? Did Williams actually know what would happen when she started abusing the official? Has an unfair example been made of Williams? Or is the punishment entirely just and fair? Possibly, given her income, she should have been fined even more, and the authorities have actually been lenient? Once Williams breached tennis' code of conduct, surely she must have known what the consequences would be? Or, is there a need for a much clearer and open statement of the punishments a tennis player will receive when unsporting conduct or behaviour is displayed?