Born in Watertown, Wisconsin and raised in Toledo, Ohio, he played infield for 16 seasons in the major leagues with the New York Giants, Brooklyn Robins, and Chicago Cubs of the National League, and after playing in the International League from 1921 to 1925 he appeared in eight games with the New York Yankees of the American League before retiring in 1926.
On Wednesday, September 23, 1908, while playing for the New York Giants in a game against the Chicago Cubs, while he was 19 years old (the youngest player in the NL), Merkle committed a base running error that later became known as "Merkle's Boner" and earned Merkle the nickname of "Bonehead."
In the bottom of the 9th inning, Merkle came to bat with two outs, and the score tied 1-1. At the time, Moose McCormick was on first base. Merkle singled and McCormick advanced to third. Al Bridwell, the next batter, followed with a single of his own. McCormick advanced to home plate, apparently scoring the winning run. The fans in attendance, under the impression that the game was over, ran onto the field to celebrate.
Meanwhile, Merkle, thinking the game was over, ran to the Giants' clubhouse without touching second base. Cubs second baseman Johnny Evers noticed this, and after retrieving a ball and touching second base he appealed to umpire Hank O'Day, who would later manage the Cubs, to call Merkle out. Since Merkle had not touched the base, the umpire called him out on a force play, meaning that McCormick's run did not count.
The run was therefore nullified, the Giants' victory erased, and the score of the game remained tied. Unfortunately, the thousands of fans on the field (as well as the growing darkness in the days before large electric light rigs made night games possible) prevented resumption of the game, and the game was declared a tie. The Giants and the Cubs would end the season tied for first place and would have a rematch at the Polo Grounds, on October 8. The Cubs won this makeup game, 4-2, and thus the National League pennant.
Accounts vary as to whether Evers actually retrieved the game ball or not. Some versions of the story have him running to the outfield to retrieve the correct ball. Other versions have it that he shouted for the ball, which was relayed to him from the Cubs' dugout. And still other versions have it that Giants pitcher Joe McGinnity saw what was transpiring, and threw the game ball into the stands; thus the ball that was picked up by or relayed to Evers was a different ball entirely. The New York Times account of the play recalls that Cubs manager and first baseman Frank Chance was the one who "grasped the situation" and directed that the ball be thrown to him covering second base.
At the time, running off the field without touching the base was common, as the rule allowing a force play after a potential game-winning run was not well known. However, Evers, who was noted as an avid student of the official rules of the game, had previously attempted the same play only a few weeks earlier, in Pittsburgh, with the same Hank O'Day umpiring. In that instance, O'Day had not seen whether the runner tagged second, so he declined Evers' appeal, but he apparently was alert to the possibility in the New York game. The outcome ensured that the rule was known to everyone afterward.
Giants manager John McGraw was furious at the league office, feeling his team was robbed of a victory (and a pennant), but he never blamed Merkle for his mistake.
Merkle died in Daytona Beach, Florida at age 67, and was interred there in Bellevue Cedar Hill Memory Gardens in an unmarked grave.
- Murphy, Cait (2007). Crazy '08: How a Cast of Cranks, Rogues, Boneheads, and Magnates Created the Greatest Year in Baseball History. New York, NY: Smithsonian Books.