The Arizona Diamondbacks have banned a season ticket holder from Chase Field for the remainder of the 2025 season due to repeated instances of fan interference, including a recent incident involving San Francisco Giants infielder Christian Koss. The fan, Dave McCaskill, interfered with a potential game-tying home run during a critical moment in Monday's game. The interference was initially ruled an out but was reversed to a double on review.

Despite the fan’s apology, the Diamondbacks decided to terminate his season ticket account, citing multiple offenses over the years. McCaskill has been involved in similar incidents for four consecutive seasons, leading to his ban until 2026 under specific conditions. This decision highlights the need for maintaining sportsmanship in the stands and reinforces the importance of player safety during critical game moments.