Brazuca

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

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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.

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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.

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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.

Video: City clinical on set piece to double lead

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Manchester City has lived up to the billing early on in the Pep Guardiola era, and the first half of Sunday’s match against West Ham has been everything the Spaniard could hope for.

After taking an early lead through Raheem Sterling after seven minutes, Fernandinho doubled the City lead in the 18th minute after a stellar set piece situation.

Kevin De Bruyne‘s stepped up for a free kick before the Belgian curled his effort directly into the path of Fernandinho, who headed home the hosts for the 2-0 lead.

Even though West Ham is understandably undermanned with Dimitri Payet, Andy Carroll and others, City is putting on a show right now at the Etihad.

West Brom 0-0 Middlesbrough: Guzan holds Baggies scoreless

WEST BROMWICH, ENGLAND - AUGUST 28: Cristhian Stuani of Middlesbrough takes on Brendan Galloway and Claudio Yacob (R) of West Bromwich Albion  during the Premier League match between West Bromwich Albion and Middlesbrough at The Hawthorns on August 28, 2016 in West Bromwich, England.  (Photo by Michael Steele/Getty Images)
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It wasn’t the most attractive perfromance all around but Middlesbrough remained perfect on Sunday after finishing level in their 0-0 draw with West Bromwich Albion from The Hawthorns.

Brad Guzan earned his second start in net on Sunday since joining Middlesbrough, and the U.S. Men’s National Team keeper was active early on, making two key saves in the first half to keep the match scoreless.

Despite Boro’s success in possession, the team lacked a final touch early on and failed to register a shot on target in the opening 45 minutes. West Brom was successful in limiting Alvaro Negredo’s touches early on, which prevented the road side from getting any sort of offensive rhythm.

West Brom continued to press for the opener in the second stanza, however, the home side’s remained limited and largely unthreatening. Craig Dawson had an opportunity to open the scoring in the 63rd minute with a header from close range, but the attempt missed wide of net after Matt Phillips played in the service.

Watch Live: Manchester City vs. West Ham (Lineups, Live Stream)

LONDON, ENGLAND - JANUARY 23:  Sergio Aguero of Manchester City battles with Aaron Cresswell of West Ham United during the Barclays Premier League match between West Ham United and Manchester City at the Boleyn Ground on January 23, 2016 in London, England.  (Photo by Paul Gilham/Getty Images)
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Pep Guardiola remains perfect in his early run in the Premier League and looks to continue that trend on Sunday as Manchester City hosts a difficult West Ham United side at 11 a.m. E.T. from the Etihad Stadium on NBCSN or live online at NBCSports.com.

Joe Hart has been the talking point for weeks now at City, but with the new signing of Claudio Bravo finalized earlier this week the attention turns to whether or not the Englishman will be offloaded before the transfer window closes next week.

WATCH LIVE: Manchester City vs. Sunderland live online

West Ham needed a late winner a week ago to edge Bournemouth at home, however, Slaven Bilic‘s side has battled hard in both of their fixtures to start the season.

The Hammers will be extremely undermanned on Sunday as Dimitri Payet headlines the group of players that haven’t travelled with the team to Manchester. Striker Andy Carroll won’t be at the Etihad either, leaving West Ham lacking with depth up front.

Enner Valencia and Cheikhou Kouyate will play key roles for the Hammers as they look to fill the voids left by Payet and Carroll.

Meanwhile, City will keep Will Caballero in net while Bravo finishes his transition into the squad. Nolito also gets the start alongside Raheem Sterling and Sergio Aguero up front, which will give West Ham fits defensively.

LINEUPS

Manchester City – Caballero, Zabaleta, Otamendi, Stones, Clichy, Fernandinho, De Bruyne, Silva, Sterling, Nolito, Aguero.
Bench – Hart, Fernando, Nasri, Kolarov, Delph, Iheanacho, Navas.

West Ham – Adrián, Ogbonna, Reid, Masuaku, Collins, Noble, Kouyate, Antonio, Tore, Enner Valencia, Fletcher.
Bench – Randolph, Byrum, Burke, Oxford, Obiang, Lanzini, Calleri.

Serie A roundup: Khedira earns Juventus three points as Napoli defeats AC Milan

ROME, ITALY - AUGUST 27:  Sami Khedira #6 with his teammates of Juventus FC celebrates after scoring the opening goal during the Serie A match between SS Lazio and Juventus FC at Stadio Olimpico on August 27, 2016 in Rome, Italy.  (Photo by Paolo Bruno/Getty Images)
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Sami Khedira hasn’t found the field much since moving to Juventus two summers ago, but when he does, he has a striker’s eye.

The German bagged his eighth goal for Juventus in just his 28th appearance as the Italian giants went on the road and defeated Lazio 1-0.

A poor clear attempt by Lucas Biglia saw Paulo Dybala’s lofted ball over the top fall to Khedira, and he skittered the ball across the face of goal into the far corner. The win is the second of the year for Juventus after they took down Fiorentina in their opening match.

There was a goal-fest at Stadio San Paolo as Napoli defeated AC Milan 4-2 braces from Arkadiusz Milik and Jose Callejon. Milik’s came in the first-half, with the opener in 18th minute, a lucky bounce as Dries Mertens’ shot clattered off the post and fell in Milik’s lap. He doubled Napoli’s lead in the 33rd minute with a beautiful header into the far corner, out-jumping Juraj Kucka.

The second half saw a flurry of action. A pair of goals four minutes apart saw Milan tie things up as M’baye Niang and Suso brought them level. Then, the yellow cards came flying. As a result, Kucka and Niang were both sent off for second cautions. Jose Callejon took advantage, bagging his first in the 74th and doubling his tally in stoppage time in a ridiculous bit of play that saw Alessio Romagnoli try to swat Mertens’ cross away from the goal line…yes, as in with his hands.

It’s a wonder Romagnoli wasn’t sent off for his actions. Napoli