The 3-2 finish turned chaotic in the ninth, when Ty France’s deep fly struck a roof beam or cable over fair territory and dropped into Jackson Chourio’s glove for an out.
Umpires let the call stand after San Diego challenged, and American Family Field ground rules say a ball hitting a cable over fair territory can still be caught for an out.
Statcast showed France’s ball left at 105 mph with a 49-degree launch angle, though its expected batting average was just .050 and whether it would have cleared the fence remained unclear.
Game 2 is set for Sunday in Milwaukee, with the bizarre ending likely to linger over a series that opened with the Brewers’ narrow edge.