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.

LIVE, FA Cup 4th round: Spurs visit Southampton in all-PL tie

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The fourth round of the FA Cup is set to get into full swing at 10 a.m. ET, with eight ties kicking off simultaneously, including a pair of all-Premier League clashes.

[ LIVE: Follow all the FA Cup scores here ]

Southampton host Tottenham Hotspur in the premier matchup of the time slot, with Jose Mourinho desperate for Cup success amid a difficult run of results at Tottenham. Elsewhere, Burnley will host Norwich City at Turf Moor. Fellow PL sides West Ham United, Newcastle United and Sheffield United are also in action.

Check the schedule of fixtures below, and hit the link above to follow along with the scores and results. As always, check back on PST for recaps and a roundup of all the action.

Saturday’s FA Cup schedule (all games at 10 a.m. ET, unless otherwise noted)

Southampton v. Tottenham Hotspur
Burnley v. Norwich City
West Ham United
v. West Bromwich Albion
Newcastle United v. Oxford United
Millwall v. Sheffield United
Portsmouth v. Barnsley
Coventry City v. Birmingham City
Reading v. Cardiff City
Hull City v. Chelsea — 12:30 p.m. ET

FA Cup: Leicester survive trip to Brentford, reach 5th round (video)

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Brendan Rodgers made nine changes, but Leicester City were simply too much for an equally rotated Brentford side in the fourth round of the FA Cup at Griffin Park on Saturday.

[ MORE: Report: Spurs, Inter close to deal for Christian Eriksen ]

Leicester took an early lead through Kelechi Iheanacho with just four minutes on the clock, and that was all the Premier League’s third-place side needed to see off the EFL Championship’s third-place side. Dennis Praet gets no official credit for the goal, but it was the Belgian midfielder’s seeing-eye through ball that carved the Bees up and found James Justin for the routine cross followed by Iheanacho’s tap-in finish.

It was far from easy or straightforward for the Foxes, though, as Brentford turned things around following the first-half whistle an so nearly pulled level just past the hour mark. Emiliano Marcondes whipped in a curling, in-swinging cross that needed the slightest of redirects to find the back of the net, but Halil Dervisoglu couldn’t get a toe on the ball and watched helplessly as it hit the inside of the post and settled on the ground a yard or two off the goal line.

Bryan Mbeumo came off the bench and put the ball into the back of Leicester’s goal with his first touch, but the Frenchman was correctly ruled offside when Rico Henry looped the ball over the Foxes’ defense.

The draw for the fifth round will be held on Monday at 2:20 p.m. ET, prior to kickoff of Bournemouth v. Arsenal.

Report: Spurs, Inter close to deal for Eriksen

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After months of posturing and working the back channels, it would appear that Christian Eriksen is close to getting his transfer away from Tottenham Hotspur.

[ VIDEO: Haaland has played 59 minutes, scored 5 goals for Dortmund ]

After months of posturing and holding firm, it would appear that Tottenham are close to getting their desired transfer fee for Eriksen despite his contract having only six months remaining.

After months of posturing and unsettling the 27-year-old star, it would appear that Inter Milan are close to getting their Danish international playmaker.

In the end, it would appear that everyone is going to get what they want, only no one truly gets what they want. Spurs spent the last year trying to sign Eriksen to a new contract; Eriksen wanted to leave in the summer and will feel like they wasted six months of his career; much like Inter would have been desperate to bolster their squad in the summer.

[ MORE: Mourinho in favor of PL’s winter break, but says timing all wrong ]

$22 million — the amount Spurs will reportedly receive from Inter — will hardly be enough to replace such an influential player, therefore Spurs come out of this long-running saga the worst of the bunch.

As for Eriksen and Inter, it’ll be a challenge for the player to immediately find his footing and shine ever so brightly in the midst of a title race, especially after the side has already slumped to back-to-back draws and fallen four points back of Juventus. Though, reportedly tripling his wages from Spurs to Inter leaves Eriksen the biggest winner in a mostly no-win situation.

Struggling Atleti in unfamiliar territory under Simeone

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MADRID — This is uncharted territory for many Atletico Madrid fans.

Few other times in recent years have they seen their team struggle so much under Diego Simeone.

[ VIDEO: Haaland has played 59 minutes, scored 5 goals for Dortmund ]

Few other times have they seen their coach fail so often while trying to put the team back on track.

Atletico hit a new low under Simeone on Thursday when it was eliminated by third-division club Cultural Leonesa in the round of 32 of the Copa del Rey. The 2-1 loss in extra time was the team’s worst result in the cup competition since losing to third-tier club Albacete at the same stage in 2011-12.

Two days after that loss in 2011, Atletico hired the then-mostly unknown Simeone to replace Gregorio Manzano, a move that kick-started one of the club’s most successful eras and led to a Spanish league title, two Europa League trophies and two Champions League final appearances.

Atletico did go through difficult moments under Simeone, including when the team failed to advance past the group stage of the Champions League a couple of seasons ago.

“There were always complicated moments in past seasons, maybe after we didn’t make it in the Champions League, or when we lost in the Champions League finals,” Simeone said. “After being at the club for so long, things like this can happen, although they shouldn’t happen.”

There is a greater sense of urgency about the team’s struggles this time.

In addition to Wednesday’s embarrassing Copa del Rey elimination, Atletico lost the Spanish Super Cup final to Real Madrid on Jan. 12, and already is eight points off the Spanish league lead after 20 matches.

[ MORE: Report: Man United’s list of possible new strikers revealed ]

Before, there used to be a notion that Simeone would quickly turn things around and put the team back on track, but this time there aren’t many signs things will improve again soon.

Atletico has yet to impress since undergoing its biggest squad revamp under Simeone at the end of last season, when it lost Antoine Griezmann and other veteran players such as Filipe Luis and Diego Godin. Young Portugal forward Joao Felix, who arrived to replace Griezmann after a transfer from Benfica worth more than 120 million euros ($133 million), has yet to meet expectations.

More concerning, Atletico is not being nearly as effective as it used to be, when it always seemed to find a way to win matches despite not playing well.

The team remains solid defensively — it has the second-best defense in the Spanish league with 14 goals conceded — but it hasn’t been able to do much in attack recently.

“Everything is harder when you can’t score,” Simeone said.

Only seven teams have scored fewer goals than Atletico’s 22 in the 20-team standings.

Diego Costa has been mostly out injured, and Victor “Vitolo” Machin and Alvaro Morata haven’t done much in attack. Morata is the team’s leading scorer with 10 goals in all competitions, and no one else has more than five.

“We have to be humble enough to be self-critical,” Simeone said. “We need to keep working to try to be ready for the challenges that we have ahead of us. We have a very good squad and I’m sure that the results that we want will start arriving soon.”

Atletico biggest chance to rebound will come next month against European champion Liverpool in the last 16 of the Champions League. The first leg will be on Feb. 18 in Spain.