KJZZ is a service of Rio Salado College,
and Maricopa Community Colleges

Copyright © 2025 KJZZ/Rio Salado College/MCCCD
Play Live Radio
Next Up:
0:00
0:00
0:00 0:00
Available On Air Stations

Cactus League ballparks to serve as a test site for robo umpires

A bat adorned with the league logo commemorates the beginning of the Cactus League at Camelback Ranch in Glendale on Wednesday, Feb. 12, 2025.
Samuel Nute/Cronkite News
A bat adorned with the league logo commemorates the beginning of the Cactus League at Camelback Ranch in Glendale on Wednesday, Feb. 12, 2025.

Baseball is back and this time, with new technology. This spring, Cactus League ballparks are becoming a test site for robo umpires.

Spring training Major League Baseball teams will have a chance to test a new automated strike zone as part of a new challenge system.

The system operates using multiple cameras to track a player’s stance to determine the strike zone.

Human umpires will still be making the original call on balls and strikes. But teams will now be allowed to challenge those calls, with an automated system using multiple cameras making the final determination.

Cactus League Executive Director Bridget Binsbacher shared details about the new addition to spring training on Wednesday.

“We’re excited to sort of serve as laboratory for possible rule changes where they can experiment with this technology," Binsbacher said.

Binsbacher says the system could bring one of the biggest structural changes to the league in a long time.

“I think it’s safe to say that we’ll probably see it during the regular season. This for spring training is going to be used in about 60 percent of the spring training games," Binsbacher said.

Cactus League Executive Director Bridget Binsbacher holds a proclamation from Gov. Katie Hobbs declaring Feb. 12 as Cactus League Welcome Day at Camelback Ranch in Glendale on Wednesday, Feb. 12, 2025.
Samuel Nute/Cronkite News
Cactus League Executive Director Bridget Binsbacher holds a proclamation from Gov. Katie Hobbs declaring Feb. 12 as Cactus League Welcome Day at Camelback Ranch in Glendale on Wednesday, Feb. 12, 2025.

If effective, the system can be used in the regular season by 2026.

“That's part of a challenge system and major league baseball has had a chance to test that already in the minor league and during fall league, but we will have it at five cactus league ballparks," Binsbacher said.

Binsbacher says they have high expectations for attendance. Despite 10 canceled games last spring, attendance rose for the third straight season.

Last year, the league averaged 7,548 people per game. The season attendance averaged out to 1.6 million people total.

With the implementation of the new robo umpire and additional factors such as the Ohtani factor, officials are expecting an even higher number of attendance this season.

Hundreds of Los Angeles Dodgers fans line up outside the gates of Camelback Ranch for spring training practice in Glendale on Wednesday, Feb. 12, 2025.
Samuel Nute/Cronkite News
Hundreds of Los Angeles Dodgers fans line up outside the gates of Camelback Ranch for spring training practice in Glendale on Wednesday, Feb. 12, 2025.
More Arizona Sports + Recreation news

Hailey Jimenez is an intern at KJZZ. She currently attends the Walter Cronkite School of Journalism and Mass Communication and Barrett the Honors College at Arizona State University.