The current world No. 1 Novak Djokovic and No. 2 Rafael Nadal are due to play a charity match tomorrow in Kazakhstan.

The commitment of playing in Kazakhstan means the star duo are missing tournaments in Vienna and Basel, which could be seen as a priority to play over an off the calender match. The two players have got permission from ATP CEO Chris Kermode, however, some other people are not happy about this. Edwin Weindorfer, who is the director of the Vienna Open, is one of them.

“I do not think it’s good that there are exhibitions ongoing during ATP events. Players are ATP members. There is an off-season after the ATP Finals and anybody can play during that time,” Weindorfer said as reported by Express.

In reality ATP players cannot play any exhibition matches during weeks of ATP Masters 1000 tournaments, ATP 500 tournaments, ATP Finals, and should they violate these rules, they would be subjected to penalties. These are described under the player Major Offence Conduct Contrary to the Integrity of the Game, unless they get a special permission allowing them to do so as stated. The rulebook states “A player has the right to petition the president or his designee for an exemption to these requirements unless otherwise specified above,” which both players have done in this case, and now they’re clear to play.

“There was approval from ATP CEO Chris Kermode because, per rules, during ATP tournaments, an exhibition match cannot be held. So we need to respect that.” Weindorfer added.

The Vienna Open director isn’t the only one person to speak out about the topic. Thomas Muster, who is a former world No.1 and French Open Champion, has had his say too.

“The tournament [Vienna] will always share the top stars with Basel. Of course, Federer plays there and Nadal and Djokovic only play where and when they want. But despite some cancellations, it is again a top field.” He said.

It’s worthy noting that playing either Vienna or Basel could have kept Djokovic as world No.1 for a longer time. He is set to lose the leading rank to the Nadal on November 4 regardless of their results at the Paris Masters.

Top seed Kiki Bertens has kicked-off her campaign at the WTA Elite Trophy in Zhuhai with a roller coaster straight sets win over Donna Vekic.

Bertens, who hasn’t won a title on the tour since the Madrid Open in May, overcame some testing moments to see off her opponent 7-6(5), 6-2. Extending her head-to-head record against Vekic to 4-3. The Dutch No.1 dropped her serve once in each set on route to victory. Winning 74% of her first service points and converting four out of her seven break point opportunities.

“The first set was really close. We were both fighting for the first set. I think Donna was a little bit injured, but in the second set, I was just trying to get my best from every point and I did that really well.” Bertens said during her on-court interview.

The latest clash between the two was a tale of two halves. To begin, it was Vekic who got off to a better start as she broke right away before the world No.10 clawed her way back to draw level midway through the opener. With little to separate the two, Bertens seized her chance in the tiebreak. Tied at 5-5, she broke the Vekic serve with the help of a clean backhand passing shot for a chance to serve the set out. An opportunity she converted with the help of a forehand error from her opponent.

Clinching the lead, the proceedings were interrupted by a medical time out for Vekic. Who underwent some treatment on her lower back. Upon resumption it was a one-way show with Bertens racing to a set and 5-0 lead. Even a wobble at the very end, where she lost two games in a row, failed to deny the top seed victory.

“I think I went for her shots there and hit a few good returns. My concentration was maybe not there, but I am happy that I could close it (the match) out at 5-2.” Bertens commented about the end to the match.

It is the fourth time Bertens has played Vekic this season. She has won three of those encounters.

Earlier in the day Aryna Sabalenka was another player to make a winning start at the tournament. The fifth seed ousted Greece’s Maria Sakkari 6-3, 6-4. Sabalenka saved all five of the break points she faced throughout the 89-minute clash and dropped just four points behind her first serve (24/28).

Sabalenka is playing in the Rose Group of the round-robin tournament, which also features Elise Mertens. Meanwhile Bertens heads the Azalea Group with a clash against Dayana Yastremska lurking in the coming days.

This year in Basel the competition is at its top, with two spots yet to be reserved in the race to the ATP Nitto Finals.

Roger Federer, who could make a 13th final in Basel this year, will commence his campaign against qualifier Peter Gojowczyk in the first quarter. In the second round the 20-time grand slam champion could play either Radu Albot or Dusan Lajovic, whom he has a clean head-to-head profile against.

Meanwhile European Open finalist, who just lost to comeback kid Andy Murray in Antwerp, Stan Wawrinka is facing the Uruguayan Pablo Cuevas in the first round. Should he take off with a win, he would face either Frances Tiafoe or Daniel Evans before he could set a clash with last year’s Basel champion in quarter-finals.

Generally it could be theoretically an easy contest for Federer, who has a H2H profile of 23 wins to three loses against Wawrinka with 17 of them on hard-courts. However Wawrinka is in good form after making his second final of the year last week after Rotterdam in February.

The second quarter sees one player who has guaranteed his debut at the ATP Nitto Finals. Greece’s Stefanos Tsitsipas regained some of his good tennis during the Asian Swing where he ousted the World No.1 Novak Djokovic in Shanghai to reserve a place at the ATP Nitto Finals. Tsitsipas is taking on Spain’s Albert Ramos-Vinolas in the first round. Only one meeting has taken place between the two on the ATP Tour in Barcelona last year with the Greek winning it. Then he could play either qualifier Lithuanian Ricardas Berankis or Pablo Andujar in the second round.

However, there is another player in this quarter, who is still trying to make it to the ATP Nitto Finals. Fabio Fognini had a disappointment last week when he lost in his first match in Stockholm after making the quarter-finals in Shanghai before losing to Daniil Medvedev. The Italian is starting against  Alexei Popyrin then he could face either Laslo Djere or Filip Krajinovic, who made it the final in Stockholm before losing to Shapovalov. Fognini is in the 11th position in the race to London, going after countryman Matteo Berrettini, 8th position, with a gap of 290 points.

Should a quarter-final between Tsitsipas and Fognini occur, the Greek leads in their previous confrontations 2-0.

Spain’s Roberto Bautista Agut is in the third quarter. He has been in bad form these past couple months, but is only 40 points behind Berrettini in the race to London. Should the Spaniard want to make his debut at the O2 Arena this year, he has to be pretty much on form as he opens against Marius Copil. Who showed a very good form in Antwerp last week and possess a big serve that could be an obstacle to a lot of players. The winner of that match will face either the Frenchman Richard Gasquet or Argentine Juan Ignacio Londero in the second round.

Still in the third quarter, another player is in the run for a spot at the ATP Nitto Finals with 90 points behind the Italian Matteo Berrettini. It’s David Goffin, who is taking off in Basel against former US Open champion Marin Cilic in what could be a thrilling match, but the Croatian isn’t in good form recently. Goffin would face either the big serving Reilly Opelka or Chile’s Cristian Garin in the second round, should he get past Cilic.

Second seed Alexander Zverev takes on Taylor Fritz in the opening round in what could be a tricky match in the fourth quarter. Zverev, who has had a very tough season this year and recorded his first top-10 win just days ago in Shanghai against Federer, has gained in momentum  significantly after his participation in Laver Cup a few weeks ago. He is now in the 7th position in the race to the O2 Arena after reaching the final in Shanghai, which he lost to Medvedev in straight sets. He has either Alex De Minaur or Hugo Dellien in the second round with possibly Benoit Paire or Germany’s Struff in the quarter-final.

The Frenchman Benoit Paire is opening against the wild card holder Henri Laaksonen, should he cruise to the second round, he would face either Jan-Lennard Struff or Miomir Kecmanovic.

Full draw