Major League Baseball will experiment with a technology system to challenge checked swing calls in the Class A Florida State League starting today.

Using a Hawk-Eye system, a checked swing call can be challenged by either the team at bat or on defense.

The decision will be made based on whether the bat head is ahead of the knob by more than 45 degrees — matching the first-base line for a right-handed hitter and the third-base line for a left-handed hitter. Short of 45 degrees will be called a no swing.

A team will be allowed to make a challenge until it has one unsuccessful challenge. A video of the Hawk-Eye determination of the maximum bat angle will be shown on the ballpark video board.

The team on defense can still ask the plate umpire to check a non-swing call with the first-base umpire for right-handed batters and third-base ump for left-handed batters without using a challenge.

MLB experimented with the system in some Arizona Fall League games last year at Salt River Fields.

There is no definition of a checked swing in the Official Baseball Rules, through it references checked-swing appeals.

The start of the test was first reported by The Wall Street Journal.

MLB experimented with an Automated Ball-Strike System using the Hawk-Eye system during 288 spring training games this year, and teams won 52.2% of their ball/strike challenge s. Baseball Commissioner Rob Manfred said regular-season use in 2026 is possible but not definite.

Strider back with Braves: The Atlanta Braves reinstated right-hander Spencer Strider from the injured list. He’s scheduled to start tonight’s game at Washington.

Strider, an NL All-Star, 20-game winner and the major league strikeouts leader in 2023, has made only one start this season because of a right hamstring injury that occurred during a warmup session in mid-April.

His start tonight will be just his fourth since the beginning of the 2024 season. He was limited to two starts in 2024 by elbow surgery to repair an ulnar collateral ligament injury.

He made his first start in a year on April 16, a 3-1 loss at Toronto, before hurting his hamstring.

All-Star Futures managers named: Former Braves stars Chipper Jones and Marquis Grissom will be managers for the All-Star Futures Game on July 12 at Truist Park in Atlanta.

Jones will head the NL team and Grissom the AL team. Players for the game are drawn from affiliates of the 30 MLB clubs.

Jones was an eight-time All-Star third baseman who spent his entire career with Atlanta, hitting .303 with 468 homers and 1,623 RBIs from 1993-2012. He won a World Series title in 1995 and earned election to the National Baseball Hall of Fame on his first ballot appearance in 2018.

Grissom spent the 1995 and 1996 seasons with the Braves, also earning a World Series ring. He was a two-time All-Star outfielder and four-time Gold Glove winner, hitting .272 with 227 homers and 967 RBIs for Montreal (1989-94), Atlanta (1995-96), Cleveland (1997), Milwaukee (1998-2000), the Dodgers (2001-02) and San Francisco (2003-05).

Jones’ coaches include Mark DeRosa (bench), Andruw Jones (hitting), Tim Hudson (pitching), Tyler Flowers (first base), Kanekoa Texeira (third base), Nick Markakis (general coach) and Peter Moylan (bullpen).

Grissom’s coaches include Jerry Manuel (bench), Fred McGriff (hitting), Marvin Freeman (pitching), Dale Murphy (first base), Brian Hunter (third base), Ryan Klesko (general) and Johnny Estrada (bullpen).