The famed racetrack has been converted to host baseball for the showcase. Over 85,000 fans were expected on hand for the first-of-its-kind event. MLB's previous attendance record was 84,587 fans at a 1954 game in Cleveland featuring the New York Yankees.

The Cincinnati Reds and Atlanta Braves completed their pre-game ceremonies but then entered a rain delay at Bristol Motor Speedway. The game will not start at its originally-scheduled first-pitch time of 7:15 p.m.

Hall of Famers Johnny Bench and Chipper Jones threw out the ceremonial first pitches on Saturday, alongside NASCAR drivers Kyle Busch and Chase Elliott. Country superstar Tim McGraw, son of former MLB pitcher Tug McGraw, and Pitbull performed a pre-game concert before players took a lap around the track.