Should we be surprised?
Tennis is the latest sport serving sad stories of alleged corruption.
This time it is match-fixing among the sport's top 50 players and the syndicates making the money are from Italy and Russia.
Match-fixing and spot-fixing have plagued cricket, with Indian bookies the paymasters.
Cycling's credibility has crashed, with the Tour de France and Lance Armstrong the high-profile casualty and culprit.
Then there is Fifa. Sepp Blatter's reputation is as flat as a punctured ball.
Second-in-line Michel Platini seems not to have behaved a whole lot better.
Who actually believes Qatar fairly and squarely won the right to host the 2022 World Cup?
And few will rush to defend the decidedly dodgy reputation of Russia, the host nation for the cup in 2018.
Athletics, meantime, has gone right off the track.
The second report into doping came out last week.
The World Anti-Doping Agency concluded senior officials in the International Association of Athletics Federations (IAAF) actually helped hide doping and even in some cases blackmailed athletics.
Not only did their actions enrich themselves, as with Fifa bosses, but their support of cheating affected the results of competition.
If anything, the stench is stronger than expected.
What will come next? How tarnished already are this year's Olympics?
What more will emerge after the Games are over?
Can Sebastian Coe, the new IAAF head, lead effectively when he was vice-president as the corruption occurred around him?
Then there is the tennis story, where a hard-to-track crucial unforced error or three could swing a match.
This is casting a black shadow over this week's Australian Open and over the sport in general.
The accusations of throwing matches have, apparently, been before tennis authorities for years and nothing was done.
Spot-fixing in cricket was uncovered via a newspaper sting.
Journalists revealed the drug and money dirt in cycling and football, and a German public broadcaster made the allegations about the state-sponsored drug programme in Russia which led to the two reports and Russia's international suspension.
BuzzFeed and the BBC are responsible for uncovering the tennis scandal.
Each time, the Western media have made the play, which says little for any checks and balances in the sports themselves or for their so-called "integrity units''.
It is so sad and so pernicious.
Many love the exhibition of wonderful athletic prowess, of stirring competition between nations and individuals.
But some of the joy is destroyed when supporters wonder if the competition is between chemists or if results are legitimate.
In one way, the question becomes not who is the best athlete but who is the best cheat?
Somehow, nevertheless, the games go on. Somehow we muddle through and still enjoy sport.
Somehow, even the Tour de France, albeit with a little less gloss, rolls on as a major event on the international sporting calendar.
Sport, once again, has similarities with the wider world in which it exists.
Corruption writ small or large is common currency in Beijing, Baghdad and even, one would think, Berlin.
Corruption, likewise, is a cancer on sport, the ugly side of professional sport.
As scandal after scandal piles up, some of the magic of sport, of its ability to excite, engage and entertain is lost.
We need a battle on several fronts to treat this disease.
Let's have the disinfectant of openness and transparency in sport decision-making, elections and accounts.
Let's have the co-operation of governments and legitimate gambling bodies.
Let's have sponsors back clean sport.
Let us, as sports followers, show our disgust at cheating and our backing of good sportsmanship.
It is so regrettable that such is the prevalence of cheating, that the tennis racket claim did not surprise.
