Dunn’s walkoff slam was the first of its kind in the majors (two outs in the ninth inning or later and the home team trailing by exactly three runs) since July 28, 2001, when Brian Giles victimized Billy Wagner to give the Pirates a 9-8 win over the Astros.
Dunn’s grand slam capped Cincinnati’s comeback from a 7-0 deficit in the eighth inning. The Reds were the first team to win a game after trailing by seven-or-more runs in the eighth inning or later since the Marlins rallied from a 9-2 deficit in the eighth inning to beat the Red Sox in Boston, 10-9, on June 28, 2003. It was only the third such win in Reds franchise history. The others were in 1951 against the Braves in Boston and in 1995 against the Mets in Cincinnati.