Overview

• The Arizona Diamondbacks have barred season-ticket holder Dave McCaskill from all home games through 2025 and terminated his Advantage Member account.
• McCaskill’s June 30 interference with Christian Koss’s fly ball led umpires to overturn an out call and award a ground-rule double on replay review.
• Team officials highlighted a pattern of offenses spanning four seasons, including three ejections and about nine reviewable incidents documented by club records and media reports.
• Video evidence unearthed by internet sleuths traced at least five prior interference plays at Chase Field, intensifying scrutiny and prompting the ban.
• The Diamondbacks said McCaskill may regain access in 2026 if he complies with specified terms and strictly follows their Fan Code of Conduct.