Behind the Brazuca: NBC’s extensive research hints less “knuckle-ball” in Brazil, NASA agrees


After our extensive research it seems as though we can at least guarantee one thing at the 2014 World Cup in Brazil… a better soccer ball to play with.

Cast your minds back to the 2010 World Cup and the debacle that was the Jabulani ball which swerved and dipped all over the place to resemble a beach ball, rather than the ball of choice for the worlds most prestigious soccer tournament.

But fear not, the Brazuca — which was unveiled by FIFA last week before the 2014 World Cup draw — won’t be a distant relative to the Jabualni. It will be, well, more normal. I’m sure goalkeepers of all 32 nations who’ve qualified are now breathing a huge sigh of relief.

For all the details on the new ball, we share with you the incredible in-depth study from Ben Popken for the Consumer News at NBC Business. Ben takes up the story as a Japanese University and NASA break down the science behind the ball, which will be kicked around to either crush or ignite the dreams of billions of soccer fans across the globe next summer.

Over to you, Ben.

The Jabulani curse is lifted.

Any knuckleballs at the 2014 World Cup should be mostly intentional, according to new independent wind tunnel results by Japanese university researchers.

The researcher’s data shows the new Adidas-designed Brazuca matchball for the 2014 World Cup is less likely to swerve at goal strike speeds, meaning there shouldn’t be a repeat of the maddeningly erratic balls at the 2010 World Cup. During those games, goalkeepers and outfield players alike accused the Jabulani matchball, with its glossier texture, asymmetrical panels, and shorter panel bonds, for voodoo shots and an early tournament goal drought.

At the University of Tsukuba in Japan, sports engineering researchers mounted soccerballs in a wind tunnel, blasted them with air, and measured what happened.

After undergoing extensive testing in labs, the “knuckle-ball” will be much less than we experienced with the Jubulani. (NBC News)

Now, in aerodynamics, for every surface there’s an airspeed at which the air flowing over it switches from smooth to turbulent, what’s called the “critical Reynolds number,” and can lead to the sudden veering in flight known as “knuckle-ball.” But in the tests the Jabulani’s occurred at higher speeds than the mid-30’s mph seen on older balls.

In fact, it happened at 53 mph, right in the 50-60 mph range professional goal strikes and corners start at.

That could explain a few things that happened in South Africa.

This time around, those strikes should power through the knuckle-ball effect. In the wind tunnel tests, the Brazuca’s critical Reynolds number occurred at 38 mph.

Those results are more comparable to the Tango 12 ball, itself a player favorite and one of the balls on which Adidas based the design for the Brazuca.

“The asymmetry of ball panel location is one of the reasons to produce knuckling effect,” said Dr. Takeshi Asai of the University of Tsukuba’s Institute of Health and Sports Science. “Ordinarily, the asymmetry of ball panel increases, as the ball panel number decreases.”

That means the Brazuca’s six interlocking boomerang panels, fewer than the Jabulani’s eight, both of which are fewer than the classic 32 pentagon and hexagon panels, could normally pose a problem.

“However, the total distance of the panel bonds or seams of the Brazuca is longer than that of Jabulani,” said Aasai, 10.89 feet worth compared to the Jabulani’s 6.49. “Therefore, I think the strength of the knuckling effect may be slightly lower than that of Jabulani.”

A NASA researcher agrees.

Click to enlarge: Here’s the findings which shows how the Brazuca will perform (NBC News)

Rabi Mehta, Branch Chief at NASA Ames Research Center and an aerodynamics expert who previously evaluated the Jabulani, has examined close up photos of the new ball. He thinks the Brazuca will gain stability over the Jabulani from its longer seams, identical interlocking panels, and a surface that features a slightly raised texture similar to a basketball’s.

“My theory is that the effective roughness compared to the previous ball is increased, which means the speed at which it knuckles is lower,” said Mehta.

That’s good news for Adidas, which has spent years making sure the Brazuca isn’t Jabulani part 2. They kicked the ball over and over with a robot leg and measured its flight, interviewed hundreds of professional players, a third of which were non-Adidas sponsored, and even snuck the Brazuca in as the matchball for the U20 World Cup.

“While we can’t comment on independent research, we can say that Brazuca is our most tested ball ever,” said Adidas spokeswoman Lauren Lamkin. “We conducted two-and-a-half years of testing in 10 countries across three continents involving more than 600 players and 26 teams to ensure that Brazuca exceeds all performance standards.”

However, she said, “It is correct that the seam geometry aids in flight stabilization.”

Hopefully, all this science leads to surer shots and more exciting gameplay in Brazil come this June. If not, at least it will be harder to blame the ball for it.

Messi returns for Argentina qualifiers vs. Brazil, Colombia

EAST RUTHERFORD, NJ - JUNE 26:  Lionel Messi #10 of Argentina takes the ball against the Chile during the Copa America Centenario Championship match at MetLife Stadium on June 26, 2016 in East Rutherford, New Jersey.Chile defeated Argentina 0-0 with the 4-2 win in the shootout.  (Photo by Elsa/Getty Images)
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BUENOS AIRES (AP) — Having fully recovered from a groin injury, Barcelona star Lionel Messi was named on Friday in Argentina’s squad to face Brazil and Colombia in the next round of World Cup qualifiers.

Messi has been in fine form for Barcelona since coming back from his latest niggling injury, scoring four goals in two matches, including a superb hat trick against Manchester City in the Champions League on Wednesday.

He has not played for his country since scoring the winner in a 1-0 win against Uruguay on Sept. 1.

In his absence, Argentina drew 2-2 away to Peru and lost 1-0 at home to Paraguay, putting it in fifth place and out of the top four positions that ensure a direct spot for the 2018 World Cup in Russia.

Messi’s return will be in Belo Horizonte against leaders Brazil, which has won its four first matches under new coach Tite.

Five days later, Edgardo Bauza’s Argentina side hosts fourth-place Colombia.


Goalkeepers: Nahuel Guzman, (Tigres), Sergio Romero (Manchester United), Geronimo Rulli, (Real Sociedad).

Defenders: Martin Demichelis (Espanyol), Mateso Musacchio (Villarreal), Nicolas Otamendi (Manchester City), Ramiro Funes Mori (Everton), Gabriel Mercado, (Sevilla), Facundo Roncaglia (Celta Vigo), Emanuel Mas (San Lorenzo), Pablo Zabaleta, (Manchester City).

Midfielders: Javier Mascherano (Barcelona), Guido Pizarro (Tigres), Lucas Biglia (Lazio), Ever Banega (Inter Milan), Enzo Perez (Valencia), Nicolas Gaitan (Atletico Madrid), Angel Di Maria (Paris Saint-Germain), Julio Buffarini (Sao Paulo), Marcos Acuna (Racing Club).

Strikers: Angel Correa (Atletico Madrid), Lionel Messi (Barcelona), Gonzalo Higuain (Juventus), Paulo Dybala (Juventus), Sergio Aguero (Manchester City), Lucas Pratto (Atletico Mineiro).

Guardiola: Aguero, Kompany have nothing to worry about at Man City

MANCHESTER, ENGLAND - MARCH 15:  An injured Vincent Kompany of Manchester City (4) speaks to Sergio Aguero of Manchester City as he leaves the pitch during the UEFA Champions League round of 16 second leg match between Manchester City FC and FC Dynamo Kyiv at the Etihad Stadium on March 15, 2016 in Manchester, United Kingdom.  (Photo by Laurence Griffiths/Getty Images)
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Both Sergio Aguero and Vincent Kompany have nothing to worry about regarding their place in the Manchester City squad, according to manager Pep Guardiola.

Neither was in the starting lineup for the Champions League loss to Barcelona, with Kompany not even in the 18. But according to Guardiola, he had his reasons for both.

“Vincent was not perfectly fit,” Guardiola said. “Sergio, I said after the game, was a tactical decision. If Sergio decides to leave it will be his decision.”

The former Barcelona manager played a striker-less formation against the La Liga giants, employing Kevin De Bruyne as a false 9. It failed, with Barcelona storming through en route to a 4-0 win, with Lionel Messi scoring a hat-trick.

Kompany has struggled with injuries the past two seasons, missing all of this season so far, half of last year, a healthy portion of the previous campaign with various injuries from hamstring problems to calf tweaks to groin pulls. According to Guardiola, it has left a permanent mark on the Belgian defender’s psyche.

“One day, in the training session, he said: ‘I didn’t feel like this [good],’” Guardiola said. “In that moment, when his head is not ready and with what happened in the last two years, it is better to stay out. I don’t want to put a lot of pressure about how many games we want him to play or set big, big targets. So it’s just try to train good and after a week of training no injuries, we’ll play a game, and after that another one. And after that we’ll see.”

Timmy Chandler, Frankfurt thrash Bobby Wood, Hamburg 3-0

SINSHEIM, GERMANY - AUGUST 01:  Coach Markus Gisdol of Hoffenheim reacts during the friendly match between 1899 Hoffenheim and AFC Bournemouth at Wirsol Rhein-Neckar-Arena on August 1, 2015 in Sinsheim, Germany.  (Photo by Daniel Kopatsch/Getty Images)
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Hamburg may have made a coaching change, but that didn’t change their immediate fortunes.

Bobby Wood and company fell to fellow USMNTer Timmy Chandler and Frankfurt 3-0 at Volksparkstadion. It was a rough home opener for new Hamburg manager Markus Gisdol, as former Fulham and Tottenham midfielder Lewis Holtby opened the scoring with an unfortunate own-goal after an ugly giveaway.

Things got worse as Dennis Diekmeier picked up his second yellow card shortly after halftime, and it was gravy from there for Frankfurt as Shani Tarashaj and Haris Seferovic bagged goals to secure the win.

Hamburg, a club that narrowly staved off relegation in a playoff last season, has just a measly two points through eight matches. They fired manager Bruno Labbadia after just a month, but it hasn’t gone much better for Gisdol as a road draw with Borussia Monchengladbach is the only salvageable result through three thus far.

Bobby Wood’s honeymoon start to the league season for Hamburg is long gone. He scored two goals in two games to start the year, but hasn’t hit the back of the net since.

Timmy Chandler, on the other hand, he’s played the full 90 minutes in every game for Frankfurt since the opener, assisting a goal in the 2-2 draw with Bayern Munich last weekend. He’s helped Frankfurt move to fourth in the league, three points behind Bayern and Koln and Red Bull Leipzig between them (what?!).

Jose Mourinho says Chelsea can’t “delete” him from its history

MANCHESTER, ENGLAND - OCTOBER 20:  Jose Mourinho the manager of Manchester United looks on during the UEFA Europa League Group A match between Manchester United FC and Fenerbahce SK at Old Trafford on October 20, 2016 in Manchester, England.  (Photo by Laurence Griffiths/Getty Images)
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With Manchester United set to visit Chelsea at Stamford Bridge, the Special One will be returning to his former stomping grounds, a place where he spent six tumultuous seasons spread across two separate reigns.

While Jose Mourinho insisted he has “no hard feelings” for his former club and the way things ended, but did not mince words the subject of his former boss came up.

While Mourinho insisted he has “respect” for Chelsea owner Roman Abramovich, telling Sky Sports, “We were never friends. We were never close to each other. So he is just a person that I keep very respected.”

Mourinho also said that, even if The Blues wanted to, “They couldn’t delete me from Chelsea history. They belong to my history too. No bad feelings,” Mourinho told Sky Sports. The owner, he decided to sack me…the fans, they have no power. They show day by day, match after match, that they wanted me, but in this profile of club, the fans have no power. In some clubs, especially in some Latin countries, the format of the club, the fans have real power on the board and with the president and owners, but here they have no power so Mr Abramovich decided to sack me, but I left with not one bad word about anyone or anybody at the club.”

The 53-year-old said the titles he won at Chelsea were proof that “I did my job.” He finished by saying that no matter the treatment from fans, he will always hold Chelsea as he does all his other stops. “From me, you are not going to have, ever, a bad word about any one of my previous clubs,” Mourinho said. “I keep always a very good feeling. It doesn’t matter what is going to happen. But, it is my nature. It is my job. It is my new club. On Sunday I will go there to try and do my job.”