https://www.mlbtraderumors.com/2026/03/mlb-to-test-check-swing-rule-changes-in -triple-a.html 撷取文章一些重点 The most notable is the introduction of the check-swing challenge system in th e Triple-A Pacific Coast League, beginning in early May. That allows a batter, pitcher, or catcher to challenge an umpire’s check-swing decision against ba t-tracking technology. MLB had tested this rule in the Low-A Florida State Lea gue and the Arizona Fall League last year MLB To Test Check-Swing Rule In Triple-A March 16th, 2026 at 11:02pm CST ‧ By Anthony Franco Major League Baseball will implement a handful of rule changes at various leve ls of the minor leagues during the 2026 season. Eric Longenhagen of FanGraphs first reported the slate and those interested in the topic are encouraged to r ead that post in full. The most notable is the introduction of the check-swing challenge system in th e Triple-A Pacific Coast League, beginning in early May. That allows a batter, pitcher, or catcher to challenge an umpire’s check-swing decision against ba t-tracking technology. MLB had tested this rule in the Low-A Florida State Lea gue and the Arizona Fall League last year. Advertisement A check-swing challenge system requires an objective cutoff point. The thresho ld is whether the bat head breaks a 45? angle relative to the handle (essentia lly aligning with the opposite base line). Major League Baseball’s rulebook d oesn’t have an official check-swing cutoff, instead leaving it at the umpire ’s discretion as to whether the hitter offered. As Longenhagen demonstrates with video, the 45? threshold is further along tha n what umpires have generally treated as the cutoff. That led hitters to succe ssfully challenge a lot of calls last year. It appears that’s a deliberate co nsideration by the league. MLB’s memo notes a slight drop in the Florida Stat e League strikeout rate after the check-swing challenge was implemented, “hav ing a positive impact on balls in play and encouraging more extensive testing at higher levels.” It’s not a huge effect but one that would turn more swing ing strikes into balls than vice versa. 今年5月开始会在3A太平洋联盟PCL测试挥 棒过半挑战系统，判断标准是是球棒头部相 对於握把的角度是否超过45度，会允许打者 投手 捕手挑战，而国际联盟IL则是仅提供裁 判判决标准，不提供球队挑战。 根据去年在1A测试的结果，45度通常比裁判 判决出棒过半的临界点靠前，如影片所示， 在引入挑战系统後1A的联盟整体三振率有显 着下滑。 看似过半但实际上不到45度 https://youtu.be/dRw89dkKFRI?si=McLLW4YtFX8duNMN 挑战影片 https://youtu.be/_kieqgvRWno?si=4cIuIKaulZhMW4LD --

※ 发信站: 批踢踢实业坊(ptt.cc), 来自: 49.216.172.220 (台湾) ※ 文章网址: https://webptt.com/cn.aspx?n=bbs/MLB/M.1773730026.A.B51.html ※ 编辑: tty0102 (49.216.172.220 台湾), 03/17/2026 14:49:02