[1] Haddix' perfect game bid was broken up in the bottom of the 13th inning, when a throwing error by Pirate third baseman Don Hoak allowed Félix Mantilla to reach base.

However, Hank Aaron's baserunning mistake caused Adcock's home run to be ruled a one-run double by National League President Warren Giles, some time later.

Adcock hit a fly ball to deep right-center field, just beyond the reach of right fielder Joe Christopher, who was making his Major League debut (he replaced Román Mejías in right field after Stuart had pinch-hit for Mejías), for an apparent home run, the ball landing between the outfield fence and another fence behind it, in front of a line of pine trees.

[2][3][4] In addition to Stuart being used as a pinch hitter, two other Pirate regulars did not play in this game: Dick Groat, who would win the 1960 National League Most Valuable Player Award, was mired in a slump and had been benched, and Roberto Clemente was sidelined with a sore shoulder.

In 1989, during a banquet attended by players from both teams commemorating the game's 30th anniversary, Milwaukee pitcher Bob Buhl told Haddix that the Braves' bullpen had stolen signs from Smoky Burgess, the Pittsburgh catcher, who was exposing them due to a high crouch.

From their bullpen, the Braves pitchers repeatedly repositioned a towel to signal for a fastball or a breaking ball, the only two pitches Haddix used in the game.