What happened: A potential go-ahead home run hit by Pete Alonso was ruled a foul ball and upheld following a replay review. Replay officials determined they lacked definitive visual evidence to confirm the ball landed in fair territory.

Why it matters: The ruling erased a potential late-game lead. The incident highlights the limitations of current camera angles when tracking high fly balls directly down the foul line.

What to watch: The league may face further questions regarding the technology and camera placements used to determine boundary calls.