It's a way to correct the most egregious mistakes, and it does it quickly. MLB's umpires are very good -- they're the best in the world at what they do -- and they're getting better too.

Baseball Commissioner Rob Manfred is an advocate of the Automated Ball-Strike System, which potentially as early as 2026 could be used to aid MLB home plate umpires, but not replace them.

If they challenge, the pitch graphic appears on the scoreboard and broadcast, and the umpire updates the count. The MLB says this takes about 17 seconds. The MLB has been testing ABS challenges in ...