The 1970 Major League Baseball All-Star Game was the 41st midseason exhibition between the all-stars of the American League (AL) and the National League (NL), the two leagues comprising Major League Baseball. The game was played on July 14, 1970, at Riverfront Stadium in Cincinnati, Ohio, home of the Cincinnati Reds of the National League. The game resulted in a 5–4 victory for the NL.

Riverfront Stadium had barely been open two weeks when it hosted its first All-Star Game. The game had been hosted by the Cincinnati Reds twice before (1938 and 1953) when their home park had been Crosley Field. The Reds would host one more All-Star Game at Riverfront Stadium in 1988. So close was the opening of the stadium and the scheduled exhibition game, that Major League Baseball Commissioner Bowie Kuhn did not confirm that the game would "definitely" be played in Cincinnati until June 1. Atlanta had been the alternative site.

Undeniably, the most remembered moment of the game was the final run, scored in the bottom of the twelfth by Pete Rose. The ball had been relayed to the American League catcher, Ray Fosse, in time to tag Rose out, but the tenacious Rose bowled Fosse over. Both players were injured, Fosse enough to drop the ball, giving Rose credit for the game-winning run.

For the first time since 1957, Major League Baseball restored the selection of the eight position players on each All-Star team to the fans. Fan balloting had been revoked after ballot-stuffing campaigns over a number of years. To avoid a repeat of the problem, the 26 million ballots were evenly distributed to 75,000 retail outlets, and 150 minor and major league stadiums. Major League Baseball Commissioner Bowie Kuhn also announced a special panel would be in place to review voting to determine if ballot stuffing had occurred.

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