On September 27, 1998, Mark McGwire of the St. Louis Cardinals made baseball history by hitting his 69th and 70th home runs of the season, breaking the previous single-season home run record of 61 set by Roger Maris in 1961.

The record-breaking moment came during a game against the Montreal Expos at Busch Stadium in St. Louis. In the third inning, McGwire launched a line drive over the left-field wall off Expos pitcher Carl Pavano for his 69th homer. Then, in the seventh inning, he crushed a pitch from Mike Thurman to left field for his 70th, sending the crowd into a frenzy.

The chase for the home run record had captivated baseball fans throughout the summer of 1998, as McGwire and Sammy Sosa of the Chicago Cubs engaged in a friendly rivalry to see who would break Maris' long-standing record first. Sosa finished the season with 66 home runs, but it was McGwire who ultimately claimed the record.

McGwire's achievement was celebrated across the baseball world, and he was widely praised for helping to revitalize interest in the sport after the 1994 players' strike. However, his legacy would later be tarnished by allegations of performance-enhancing drug use, which McGwire eventually admitted to in 2010.

Nonetheless, September 27, 1998, remains a significant date in baseball history, as it marked the culmination of one of the most exciting and memorable home run races of all time.