Overview

• An 11-member competition committee is expected to vote Tuesday on the plan, and the six owners on the panel could carry approval, according to reports.
• The challenge format lets teams retain a challenge if an appeal overturns a called pitch.
• The system was tried in spring training and at the 2025 All-Star Game after extensive minor-league testing.
• A recently finalized agreement with the umpires’ union includes provisions for ABS, and the committee can enact on-field changes with 45 days’ notice to the MLBPA.
• Commissioner Rob Manfred has endorsed the challenge approach as a compromise between full automation and traditional umpiring.