Can sensors prevent elbow injuries in baseball?

  • By RONALD BLUM
  • Sunday, April 3, 2016 1:01am
  • Sports

BRADENTON, Fla. — As Pirates prospect Matt Benedict tossed a baseball on Roberto Clemente Field at Pittsburgh’s minor league complex late one Sunday afternoon, five blue sensors attached to his body recorded 39 sets of measurements ranging from shoulder rotation to hip speed to stride.

Minutes later, the 27-year-old right-hander examined a hand-held computer, checking how he rated against test groups.

Biometric baseball has arrived.

Programmers already have revolutionized the game with defensive shifts. Now they hope for a new level of diamond data that will stop the spate of torn ulnar collateral ligaments in elbows and an epidemic of Tommy John surgeries.

“It’s the next sabermetrics,” said Glenn Fleisig, a Ph.D. in biomedical engineering who directs research at Dr. James Andrews’ American Sports Medicine Institute.

“It’s science and the competitive advantage of knowing what your players are doing vs. other people not knowing what their players are doing,” he said.

For the scientists, Newton meters are the next big baseball stat, measuring valgus torque — stress on the elbow.

Motus Global, a company founded in 2010 by creators of the motion capture software for the Grand Theft Auto III and IV video games, is launching its five-sensor MotusPro system this year and a single-sensor sleeve for consumers with a $150 price tag.

While the company says 27 of the 30 big league teams have used its products, some players worry wearable technology might turn against them — kind of like a malevolent HAL 9000 in “2001: A Space Odyssey” — and provide management with damaging data.

In-game use for the major and minor leagues isn’t allowed for this year, and players can decide on their own whether to use during workouts.

“The union, without some negotiation, would never let the teams have that information,” said Toronto pitcher R.A. Dickey, a former NL Cy Young Award winner, “because they would use it in arbitration, they’d use it in contract negotiations. I would, too, if I was an owner or a team.”

Based in the New York City suburb of Massapequa and with a lab at the IMG Academy in Bradenton, Motus was launched in 2010 by Joe Nolan and Keith Robinson. They both attended the New York Institute of Technology and founded Perspective Studios, where they worked with Electronic Arts, MTV Games, Sony Computer Entertainment, Microsoft Game Studio and others.

They sold Perspective in 2009 to Rockstar Games, a division of Take-Two Interactive Software Inc., and thought about another venture.

“We just looked for an area where we thought there was a real growth opportunity and we could sort of deploy our experience in movement analysis,” Nolan said.

ASMI has been measuring pitchers’ biomechanics since 1990, but players had to go to a lab in Birmingham, Alabama, strip to their shorts and attach 30-50 reflective markers. With advancements, Motus developed a 16-millimeter, 14-ounce sensor that was tested last year. This year’s model is down to 9 millimeters and 7 ounces.

The top-of-the-line system includes two chips on a compression sleeve that slides over a pitcher’s arm: a master sensor with a blue dot over the elbow and another with a red dot over the biceps. A detector with a green dot slides into a pocket over the chest and one with a yellow dot over the belly button. The final sensor, with a purple dot, is affixed to the pitcher’s lead foot. Bluetooth technology can transmit the details of a throw within 9 seconds, or the stats can be downloaded after a bullpen, inning or game.

Benedict resembled The Six Million Dollar Man more than the pitch-till-your-arm-hurt prototype that dominated the sport for a century.

“I’m not a huge physics guy. But from the way they can break it down and help you understand exactly what’s going on with your body, I think it would be something that most people would be able to learn,” said Benedict, a 30th-round draft pick in 2011 who made it up to Triple-A last year.

“For someone who is maybe rehabbing and wants to see where they’re at in their progression, it could be a great tool for them.”

To establish models, Motus evaluated 750 pitchers who threw over 90 mph and at the time of testing had not sustained an injury during the previous two years.

“One of the major goals of our single-sensor system is to measure workload on the UCL, the Tommy John ligament, and that’s meant to be worn every day, the moment a player steps on the field till the moment they step off,” said Ben Hansen, Motus’ chief technology officer.

“What we’re seeing now is we have 18 months of what a Major League Baseball pitcher’s throwing regimen looks like, and it’s fascinating to see this data,” he added. “We hope players continue to wear it and we see what their workloads are throughout a career and what workloads lead to injury. That’s our ultimate goal.”

New York Mets medical director Dr. David Altchek, who like Fleisig is a Motus consultant, said several years of data will be needed before judgments can be made on how much elbow stress is too much. He sees three immediate purposes for the Newton meters measurement: comparing throwing off a mound with tossing on flat ground, monitoring exertion during rehabilitation and “for kids to keep the Newton meters down when their growth plates are open.”

After watching a demonstration of the 2015 model, New York Yankees pitching coach Larry Rothschild was skeptical. He didn’t think the sensor was that stable on the elbow, an issue Motus says the smaller chip has done away with.

“It’s got a ways to go,” Rothschild said. “Unless the guy’s in a game and cranking it up, I’m not sure what information you’re getting. And a lot of players aren’t going to wear this.”

Altchek doesn’t envision pitchers wearing sensors on the mound in contests that count — “the likelihood of using that in games is like the likelihood of the PGA Tour allowing players to use range finders.” But Yankees reliever Andrew Miller, who played college ball with Hansen at North Carolina, says miniaturization may eventually change that, assuming privacy concerns are addressed.

“Who knows? In 10 years, they may be so small and unnoticeable and guys are so used to them, every single person in the big leagues is wearing them in an important game,” Miller said. “They might be worn in World Series games.”

More in Sports

Senior Juneau-Douglas High School: Yadaa.at Kalé hockey players were recognized at the Treadwell Arena on Friday, Jan. 23, 2026 before the Crimson Bears faced the Homer High School Mariners. Head coach Matt Boline and assistant coaches Mike Bovitz, Luke Adams, Jason Kohlase and Dave Kovach honored 11 seniors. (Chloe Anderson / Juneau Empire)
JDHS celebrates hockey team’s senior night with sweeping victory over Homer

The Crimson Bears saw an 8-2 victory over the Mariners Friday night.

Photo by Ned Rozell
Golds and greens of aspens and birches adorn a hillside above the Angel Creek drainage east of Fairbanks.
Alaska Science Forum: The season of senescence is upon us

Trees and other plants are simply shedding what no longer suits them

Things you won’t find camping in Southeast Alaska. (Jeff Lund/Juneau Empire)
I Went to the Woods: Sodium and serenity

The terrain of interior Alaska is captivating in a way that Southeast isn’t

An albacore tuna is hooked on a bait pole on Oct. 9, 2012, in waters off Oregon. Tuna are normally found along the U.S. West Coast but occasionally stray into Alaska waters if temperatures are high enough. Sport anglers catch them with gear similar to that used to hook salmon. (Photo provided by the National Oceanic and Atmospheric Administration/West Coast Fisheries Management and Marine Life Protection)
Brief tuna bounty in Southeast Alaska spurs excitement about new fishing opportunity

Waters off Sitka were warm enough to lure fish from the south, and local anglers took advantage of conditions to harvest species that make rare appearances in Alaska

Isaac Updike breaks the tape at the Portland Track Festival. (Photo by Amanda Gehrich/pdxtrack)
Updike concludes historic season in steeplechase heats at World Championships

Representing Team USA, the 33-year-old from Ketchikan raced commendably in his second world championships

A whale breaches near Point Retreat on July 19. (Chloe Anderson/Juneau Empire)
Weekly Wonder: The whys of whale breaching

Why whales do the things they do remain largely a mystery to us land-bound mammals

Renee Boozer, Carlos Boozer Jr. and Carlos Boozer Sr. attend the enshrinement ceremony at the Naismith Basketball Hall of Fame in Sprinfield, Massachusetts, on Saturday, Sept. 6, 2025. As a member of the 2008 U.S. men's Olympic team, Boozer Jr. is a member of the 2025 class. (Photo provided by Carlos Boozer Sr.)
Boozer Jr. inducted into Naismith Hall of Fame with ‘Redeem Team’

Boozer Jr. is a 1999 graduate of Juneau-Douglas: Yadaa.at Kale

Photo by Martin Truffer
The 18,008-foot Mount St. Elias rises above Malaspina Glacier and Sitkagi Lagoon (water body center left) in 2021.
Alaska Science Forum: The long fade of Alaska’s largest glacier

SITKAGI BLUFFS — While paddling a glacial lake complete with icebergs and… Continue reading

Photo by Jeff Lund/Juneau Empire
The point of fishing is to catch fish, but there are other things to see and do while out on a trip.
I Went to the Woods: Fish of the summer

I was amped to be out on the polished ocean and was game for the necessary work of jigging

A female brown bear and her cub are pictured near Pack Creek on Admiralty Island on July 19, 2024. (Chloe Anderson for the Juneau Empire)
Bears: Beloved fuzzy Juneau residents — Part 2

Humor me for a moment and picture yourself next to a brown bear

Isaac Updike of Ketchikan finished 16th at the World Championships track and field meet in Budapest, Hungary, on Tuesday. (Alaska Sports Report)
Ketchikan steeplechaser makes Team USA for worlds

Worlds are from Sept. 13 to 21, with steeplechase prelims starting on the first day

Old growth habitat is as impressive as it is spectacular. (Photo by Jeff Lund/Juneau Empire)
I Went to the Woods: The right investments

Engaged participation in restoration and meaningful investment in recreation can make the future of Southeast special