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Illustration: Aïda Amer/Axios

An electronic radar system called TrackMan will soon be calling balls and strikes in the Atlantic League, an independent East Coast league that has emerged as MLB's testing ground for new rules and equipment initiatives.

Driving the news: The first step in this adventure began last Thursday at parks in Bridgewater, N.J. (Somerset Patriots) and New Britain, Conn. (New Britain Bees).

  • In a simple test to make sure that TrackMan data could be successfully transmitted and understood, home plate umpires were fitted with earpieces that relayed calls to them one-tenth of a second after the ball crossed the plate.
  • The umpires were told to still call "their" strike zone, leading to some confusion when their call didn't match Trackman's. When this goes live next month, they'll be going with whatever TrackMan says.

The intrigue: Major League Baseball will be watching this experiment closely. A few things they'll be looking for:

  • How will hitters react when a pitch they think is a ball is called a strike by TrackMan? And how will pitchers react when the opposite is true?
  • How easily can the zone can be adjusted so that it's accurate from batter to batter, depending on their height and batting stance?
  • And most importantly, will umpires be invested enough in each pitch to fill the still-important role of calling things like checked swings and managing the flow of the game?

The big picture: In a world of instant replays and booth reviews, it's not hard to imagine MLB eventually going this route. Should that day come, consider its impact on umpires and catchers, in particular:

  • Umpires: On one hand, they might be paid less as a result of their jobs becoming easier. Then again, maybe they wouldn't be — all while never having to be yelled at again.
  • Catchers: "Framing" (getting borderline pitches called for strikes) has become one of baseball's most highly coveted skills. TrackMan would make it a complete non-factor overnight.

Go deeper: Umpires get worse with age

Go deeper

Rohingya refugees sue Facebook over Myanmar hate speech

Internally displaced Rohingya peoples at a market area in the Baw Du Pha IDP Camp in Sittwe in Myanmar's western Rakhine state. Photo: STR/AFP via Getty Images

Rohingya refugees accused Facebook in a $150 million lawsuit filed Monday of amplifying hate speech against the persecuted minority Muslims in Myanmar via algorithms and failing to take down inflammatory posts.

Why it matters: Thousands of Rohingya Muslims have been killed in Myanmar in what the United Nations deemed a genocidal campaign. Tens of thousands of others have been displaced, notably following a massacre by Myanmar's military in 2017.

Former D.C. Guard alleges Army generals lied about Jan. 6 response

Members of the National Guard and Capitol police keep a small group of pro-Trump demonstrators away from the Capitol following the insurrection on Jan. 6. Photo: Spencer Platt/Getty Images

A former D.C. National Guard official has alleged that two Army generals "lied" to Congress in their testimony on the U.S. Capitol riot, Politico first reported Monday.

The big picture: Col. Earl Matthews, who was serving on Jan. 6, alleges in a memo that the official version on the military response is "worthy of the best Stalinist or North Korea propagandist" and that the Pentagon inspector general's November report on it features "myriad inaccuracies, false or misleading statements, or examples of faulty analysis."

Toyota to build $1.3 billion U.S. battery plant in North Carolina

The all-electric Toyota bZ4X, the company's first battery-electric vehicle, at the Los Angeles Auto Show in Los Angeles, California on Nov. 17. Photo: Frederic J. Brown/AFP via Getty Images

Toyota announced Monday it's investing $1.3 billion to construct an electric vehicle battery "megasite" near Greensboro, North Carolina, set to open in 2025.

Why it matters: The Greensboro-Randolph Megasite will employ 1,750 people and have four production lines, each capable of delivering enough lithium-ion batteries for 200,000 vehicles when it opens, per a Toyota statement.