Roger Federer revealed his concern that corruption may be having an impact on top-level tennis.
And the Swiss superstar has urged the sport's governing bodies to show no mercy if any cheating of the system can be proven.
It has emerged tennis authorities are looking into betting patterns on a Wimbledon match.
The online bookmaker Betfair alerted the Tennis Integrity Unit (TIU) after £700,000 was gambled on the first-round contest in which Austrian number 26 seed Jurgen Melzer beat American Wayne Odesnik by three sets to love.
Some bookmakers suspended betting on the match as the wagers flooded in.
But it is believed the surge in betting could have been down to rumours circulating that Odesnik was suffering from an injury.
Federer was asked for his view on the overall suspicious betting issue and said: "We don't talk about it in the locker room. But it's happened more frequently than we talk about it.
"If it's happening or not, we are suspecting. We're not sure. But, of course, it has no place in tennis.
"But it's hard to control. But I'm sure the ATP (Association of Tennis Professional) and the ITF (International Tennis Federation), we're trying our best to catch those guys - if there are any out there.
"I think we should have massive bans on those who get caught so they get really scared of doing it.
"We talk about it in the Player Council, Player Board.
"Those are things definitely we're trying to fight. We have a good set-up, so we can't avoid that there are some funny results sometimes here and there. That doesn't mean it's really happening."
The world number two was also asked whether it would be difficult to control a flow of information reaching bookmakers.
"I don't know. I've never been approached," Federer said. "I never knew it existed until a few years ago when all of a sudden I heard about it. So I've been shocked to hear it.
"Well, we always hope that the players also want the best for the sport. That is, at the end of the day, what it comes down to."
American Odesnik, ranked 109 in the world, was not expected to win against Melzer even if fully fit.
Before the match the odds on a 3-0 win went from even money to 1-5.
Odesnik, 23, said last night: "I have no idea about this. I don't know why someone would bet for me to lose. This was my first tournament on grass this season.
"Yesterday, I had a little bit of a strain in my thigh but it was not a question of not being able to play."
He said he would not do anything to jeopardise his future.
And speaking before a practice session today, Melzer, who is not under suspicion, said: "I played my match. I won in three sets. I didn't have any knowledge of any betting. I was surprised this morning to read it in the papers.
"Even if he was fit, I would beat him on three sets on grass.
"The odds would be that I would beat him in three sets. Any set I would lose would be a surprise.
"I'm now in a strange position. I'm getting asked questions about something I have nothing to do with.
"It's bad for tennis."
Odesnik, 23, said last night: "I have no idea about this. I don't know why someone would bet for me to lose. This was my first tournament on grass this season.
"Yesterday, I had a little bit of a strain in my thigh but it was not a question of not being able to play."
He said he would not do anything to jeopardise his future.
And speaking before a practice session today, Melzer, who is not under suspicion, said: "I played my match. I won in three sets. I didn't have any knowledge of any betting. I was surprised this morning to read it in the papers.
"Even if he was fit, I would beat him on three sets on grass.
"The odds would be that I would beat him in three sets. Any set I would lose would be a surprise.
"I'm now in a strange position. I'm getting asked questions about something I have nothing to do with.
"It's bad for tennis."
* PA Sport
Women & Power: A Manifesto
Mary Beard
Profile Books and London Review of Books
From Zero
Artist: Linkin Park
Label: Warner Records
Number of tracks: 11
Rating: 4/5
The five pillars of Islam
Company%20Profile
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Nayanthara: Beyond The Fairy Tale
Starring: Nayanthara, Vignesh Shivan, Radhika Sarathkumar, Nagarjuna Akkineni
Director: Amith Krishnan
Rating: 3.5/5
Wicked
Director: Jon M Chu
Stars: Cynthia Erivo, Ariana Grande, Jonathan Bailey
RESULTS
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Where to donate in the UAE
The Emirates Charity Portal
You can donate to several registered charities through a “donation catalogue”. The use of the donation is quite specific, such as buying a fan for a poor family in Niger for Dh130.
The General Authority of Islamic Affairs & Endowments
The site has an e-donation service accepting debit card, credit card or e-Dirham, an electronic payment tool developed by the Ministry of Finance and First Abu Dhabi Bank.
Al Noor Special Needs Centre
You can donate online or order Smiles n’ Stuff products handcrafted by Al Noor students. The centre publishes a wish list of extras needed, starting at Dh500.
Beit Al Khair Society
Beit Al Khair Society has the motto “From – and to – the UAE,” with donations going towards the neediest in the country. Its website has a list of physical donation sites, but people can also contribute money by SMS, bank transfer and through the hotline 800-22554.
Dar Al Ber Society
Dar Al Ber Society, which has charity projects in 39 countries, accept cash payments, money transfers or SMS donations. Its donation hotline is 800-79.
Dubai Cares
Dubai Cares provides several options for individuals and companies to donate, including online, through banks, at retail outlets, via phone and by purchasing Dubai Cares branded merchandise. It is currently running a campaign called Bookings 2030, which allows people to help change the future of six underprivileged children and young people.
Emirates Airline Foundation
Those who travel on Emirates have undoubtedly seen the little donation envelopes in the seat pockets. But the foundation also accepts donations online and in the form of Skywards Miles. Donated miles are used to sponsor travel for doctors, surgeons, engineers and other professionals volunteering on humanitarian missions around the world.
Emirates Red Crescent
On the Emirates Red Crescent website you can choose between 35 different purposes for your donation, such as providing food for fasters, supporting debtors and contributing to a refugee women fund. It also has a list of bank accounts for each donation type.
Gulf for Good
Gulf for Good raises funds for partner charity projects through challenges, like climbing Kilimanjaro and cycling through Thailand. This year’s projects are in partnership with Street Child Nepal, Larchfield Kids, the Foundation for African Empowerment and SOS Children's Villages. Since 2001, the organisation has raised more than $3.5 million (Dh12.8m) in support of over 50 children’s charities.
Noor Dubai Foundation
Sheikh Mohammed bin Rashid Al Maktoum launched the Noor Dubai Foundation a decade ago with the aim of eliminating all forms of preventable blindness globally. You can donate Dh50 to support mobile eye camps by texting the word “Noor” to 4565 (Etisalat) or 4849 (du).
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Company%20profile
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