Wimbledon champion Ash Barty has "a great chance" of securing Olympic glory for Australia in Tokyo.
That is the view of former Wimbledon winner Pat Cash, though he warned there is plenty of scope for upsets in both the men's and women's singles.
Monica Puig claimed a surprise victory at Rio 2016 - then ranked 34th, she stunned Angelique Kerber in the final after beating Petra Kvitova and Garbine Muguruza en route to give Puerto Rico their first-ever gold medal.
Roger Federer and Novak Djokovic are two greats on the men's side who have not tasted Olympic glory, something the Serbian will look to put right this year as he pursues a Golden Slam.
Cash, though, would not be surprised to see the Olympics throw up another surprise result, even though he hopes to see compatriot Barty come out on top in the women's tournament.
He told Stats Perform: "The women's draw is very, very even. If you don't play well in one of those matches, you're out.
"There's no such thing as an easy first round really in a tournament such as the Olympics, particularly the men’s side where it's best of three sets. So if you slip up, you're gone.
"There's no chance of coming back from two sets to one down, because it's over. So that's trickier for somebody like Djokovic who can typically run people into the ground.
"Ash has got a great chance of winning the Olympics, but I think probably there's 30 girls who think they can do that as well and they're probably right.
"We've seen some unusual results in the Olympics and shorter form tournaments like that, also on the men's side.
"It's very hard to say, but obviously, [Barty] is in great form and full of confidence - that goes a long way to winning a gold medal."
There have been a host of high-profile withdrawals from the tennis in Tokyo.
Rafael Nadal, Federer, Dominic Thiem, Matteo Berrettini, Serena Williams, Sofia Kenin, Simona Halep and Coco Gauff among a large list of top players who will be missing.
Some absences were unavoidable due to injuries or positive coronavirus cases but some players have opted to rest amid a hectic calendar, avoiding Japan's strict COVID-19 rules in the process.
Cash has mixed views on the subject but does feel playing at the Olympics should be seen as a rare and valuable opportunity.
"I think I think they would [look back fondly at winning a medal]," said Cash.
"It’s certainly one of the regrets in my career that I didn't play the Olympics [in 1988]. I had a niggling injury and decided to rest.
"Looking back, I thought I could have won a medal, maybe even a gold medal. I would have probably given it a really good shot.
"In my era it wasn't the pinnacle. I think Novak Djokovic has talked about that now, he said, ‘The main thing for me is winning slams, they're the pinnacle of our game’.
"But to win a gold medal, it's pretty cool. You'll find that the players who do win a gold medal, if you tell the grandkids, 'I won a Wimbledon trophy' or 'I won a gold medal', they’ll go, 'Oh, where’s the gold medal?'
"Having said that, there's a lot of players who aren't playing the Olympics this year. Certainly for a few years, it was a novelty - I'm not sure if it's wearing off or not.
"But to perform for your country, I think is an honour and we haven't had the opportunity to do that much in the last couple of years.
"With the Davis Cup, the men's competition is really just a fading, unfortunately, dying competition, which not many people really care about any more.
"That's very, very sad, so the Olympics is often the best opportunity to represent your country."
Cash delved deeper into the dilemma players are likely to have faced.
"I wouldn't put any criticism on anybody for the personal choice after these last 18 months," he said. "It's their choice, everybody's got a different journey in this and it's part of their careers.
"With COVID and all that sort of stuff that's going on - the bubbles - some of the stresses are unknown like being away from family and friends for months on end and not actually have any break.
"Everybody's got their own different stories, some of them are injured, some were coming back from injury, some think 'I'm not going to make a trip to Japan' - with all the restrictions it's not going be fun.
"It's not going to be a fun Games where you can go there and watch the other athletes. In Los Angeles [the 1984 Games] the highlight was actually to go and watch the track events, which I did.
"That's not going to happen, you're in a hotel, you're in the village or, you're gonna go straight to the tennis and back only to a certain area of the village, I think it's going to be locked down for tennis players only.
"You may not be able to mingle with the other athletes. So I think a lot of the fun has been taken out of this.
"But again, it's representing your country and trying to get trying to get a gold medal. So some players will go to great lengths to do that."
Emma Raducanu records impressive victory over Angelique Kerber in Stuttgart
Emma Raducanu claimed an emphatic 6-2 6-1 win over former two-time champion Angelique Kerber in the last 32 of the Porsche Grand Prix in Stuttgart.
Fresh from helping Great Britain reach the finals of the Billie Jean Cup at the weekend, Raducanu continued her promising form on clay by breezing past the home favourite.
Both Raducanu and Kerber were playing as wild cards in Stuttgart, with the Briton tumbling down the rankings after time out to undergo three surgeries.
Meanwhile former world number one Kerber only recently returned from 18 months out on maternity leave.
Raducanu got off to a flying start by breaking Kerber in the opening game and despite an immediate response from the German, the 2021 US Open champion took control and claimed the first set in 41 minutes.
Kerber was broken again at the start of the second set and although she managed to haul back level, Raducanu stepped up a gear and shrugged off a brief visit from the trainer to wrap up an emphatic win.
Also in Stuttgart, reigning US Open champion Coco Gauff rallied from 4-2 down in the deciding set to overcome fellow American and world number 134 Sachia Vickery 6-3 4-6 7-5.
And Tunisia’s Ons Jabeur finally snapped a five-game losing streak to beat Ekaterina Alexandrova 2-6 6-3 7-6 (1), telling reporters: “I thought about withdrawing so many times because I couldn’t take another loss.”
In Rouen, Naomi Osaka’s return to clay was cut short by a 6-4 6-2 first round defeat to Martina Trevisan.
Like Kerber, Osaka only recently returned to the tour following maternity leave, and was competing as a wild card.
In the Oeiras Ladies Open in Portugal, Britain’s fifth-seeded Harriet Dart suffered a 6-3 6-1 defeat to home player Matilde Jorge.
Rafael Nadal’s Barcelona Open hopes ended by Alex de Minaur
Rafael Nadal’s latest comeback bid came to an end as he was well beaten 7-5 6-1 by fourth seed Alex de Minaur at the Barcelona Open.
The 37-year-old was playing just his second tournament in 15 months after suffering another hip problem at his comeback event in Brisbane in January.
And having intimated that this will be his final year before retirement, Nadal’s defeat was likely to mark his final appearance at a tournament he has won 12 times.
Having overcome Italian Flavio Cobolli in the opening round, Nadal faced a much sterner test against the in-form De Minaur and was sent scampering around the court in a tight opening set which was edged by the Australian.
De Minaur went on to step up a gear, securing a double break over the Spaniard and racing over the line behind a strong service game on which he did not drop a single point in the second set.
Jack Draper made the most of a rain delay to defeat wild card Rudolf Molleker and reach the quarter-finals of the BMW Open in Munich.
German Molleker, ranked 179th, had been the better player in the first set but a brief stoppage ahead of the second set changed the momentum of the contest.
Draper began to assert his powerful game after the resumption and lost only two more games, pulling away to claim a 4-6 6-1 6-1 victory.
In the last eight the British number two, who is ranked 46th, will take on either third seed Taylor Fritz or Spanish qualifier Alejandro Moro Canas.
Speaking in an on-court interview, Draper said: “I think Rudy played an amazing level in the first set. The conditions were very rainy and very slow. In the second and third, the sun comes out and I start feeling better. I’m really proud of the way I played.”
Rafael Nadal eases past Flavio Cobolli on return to action in Barcelona
Rafael Nadal made a triumphant return to the match court with victory over Flavio Cobolli in the first round of the Barcelona Open.
The 37-year-old was playing just his second tournament in 15 months after suffering another injury problem in his hip muscle at his comeback event in Brisbane in January.
Nadal only committed to playing at the tournament he has won 12 times on Monday but there was not much rust on display as he eased to a 6-2 6-3 victory over 21-year-old Italian Cobolli in his first match on clay since he won his 14th French Open title in 2022.
Nadal received a hero’s welcome as he strode out onto the court that bears his name and, although there were a few loose forehands in the early stages, the former world number one was too solid for Cobolli.
Cobolli understandably looked nervous and contributed to the scoreline with far too many errors, but a big factor in that was the pressure being exerted from the other end of the court.
A blip came when Nadal, who is set to retire at some point this season, played a poor game to drop serve for the first time in the third game of the second set but he had already broken Cobolli and quickly restored his advantage.
There were some vintage forehands from Nadal in the final stages and he clinched victory when Cobolli netted a final backhand, thrusting his fist into the air.
The home favourite faces a real test next, though, when he takes on in-form fourth seed Alex De Minaur.
Meanwhile, second seed Andrey Rublev destroyed his racket at the end of a 6-4 7-6 (6) defeat by Brandon Nakashima that continued his poor run of form.
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