05.04.2026 • 3 min read • Baseball · Strategy · Challenge
Anyone who knows me is aware that my favourite sport is baseball. My love for the game was born from watching the rivalry between the New York Yankees and the Boston Red Sox with my grandad during the late 1990s and early 2000s. He was a devoted Yankee fan. Despite his own loyalty, he insisted that I should support the Red Sox. He often made me bet against his own team to encourage this preference. I accepted these wagers to please him, yet I was secretly rooting for the Yankees all along. Those afternoons by the television established a permanent affection for the sport that remains to this day.
Having grown up a Yankee supporter, I usually look forward to the start of every season so I can catch a game or two. The 2026 season is particularly interesting due to a fundamental change in the rules. Major League Baseball has officially implemented the Automated Ball-Strike (ABS) Challenge System. This follows a period of testing in 2025 when the technology was limited to the minor leagues and spring training. Although the home plate umpire still makes the initial call for every pitch, players now have the power to challenge these decisions in real time.
The rule change includes two main components: a new protocol for players and a digitised definition of the strike zone. To initiate a review, a batter, pitcher, or catcher must perform a specific gesture. They must tap the top of their helmet or cap within two seconds of the umpire’s call. This request must be an isolated act of intuition. Players are strictly prohibited from receiving signals or guidance from coaches in the dugout before they challenge. Each team begins the game with two challenges. If the system proves that the player was correct, the team retains the challenge for future use. If the original call is upheld, the challenge is lost.
The second part of the change involves the strike zone itself, which is no longer a matter of personal interpretation by the umpire. It has been replaced by a digital rectangle that is customised for each player. The width remains a constant 17 inches to match the width of home plate. Vertical limits are calculated as percentages of the batter's measured height. The top of the zone is set at 53.5% of their stature, and the bottom is fixed at 27%. The system measures the ball as it passes through a two-dimensional plane at the midpoint of the plate. When a challenge is triggered, an animation appears on the stadium scoreboard to show the result to the crowd.
Early games in the season show that the rule changes are entertaining, to say the least. As a long-time fan, it is interesting to see players challenge what was previously unchallengeable. This raises the question of whether umpires will become targets for their mistakes. As specific players improve at using the system, one must consider the impact on an official’s ego. Imagine ruling a pitch as a ball and having the catcher immediately challenge your decision. The supporters become vocal while the umpire may feel the weight of failing to see a clear call. What does this do to a person's composure? If the catcher continues to win these challenges, one wonders if the official will seek a subtle form of retribution. Will they begin to call fewer strikes for that team once the challenges have been exhausted? It remains to be seen.
Teams must also consider the strategic timing of these challenges. I have always admired the Yankees for their ability to recover from a poor start and perform when it matters most. The team is frequently defined by its ability to decide matches with a late home run. This raises a question regarding the instructions a manager should provide. When should a player use a challenge? Data from the 2025 minor league trials suggests that players prefer to use challenges in later innings when the stakes are higher. Whether this strategy is sound in the long term remains an open question. Every season consists of 162 games. This provides ample data to find an answer.
Another point for consideration is that only three players are permitted to challenge the decision of an umpire. Currently, this authority is restricted to the batter, the pitcher, and the catcher. Many teams have delegated this responsibility to their catchers, as they occupy the best position to judge the trajectory of the ball. It is becoming clear that catchers must now develop a new skill: knowing when to challenge the judgement of an official. Although I have only watched a limited number of games, early statistics show that certain players are performing significantly better than their peers.
In any professional field, superior skills should result in greater pay and recognition. It remains to be seen if this will apply to catchers. Traditionally, batters and shortstops receive the most attention from fans. Catchers are often relegated to a secondary tier of recognition unless they also excel at batting. I wonder if we are witnessing the emergence of a new class of specialist who consistently excels at auditing the decisions of any umpire. It is likely that young players are already beginning to refine this specific talent.
All these curiosities are interesting elements to consider while watching the game. However, I cannot help but wonder what these new rules will ultimately do to the character of baseball. A limit of two challenges per team may seem modest. Yet, considering the outlier case, what will happen when a team challenges early and wins every time? Will the manager let their catcher continue to challenge, or will they ask the player to save them for later innings? Will the umpire lose confidence as the game progresses? Will the crowd turn against the official for their failures? Will we have a more just game, or simply a more anxious one? I cannot wait to watch another match to find out.