Zimmerman was born in New York City in 1887. He started his professional baseball career with the New York State League's Wilkes-Barre Barons in 1906. The following season, he was purchased by the Chicago Cubs. He was a part of the Cubs teams that won the World Series in 1907 and 1908, although he received limited playing time. Within the next few years, he became a regular player. In 1912, Zimmerman won the NL triple crown, leading the league with a.372 batting average, 14 home runs, and 104 runs batted in. He also led the league with 207 hits and a 170 OPS+. He never played as well again but remained a productive player. In 1916, Zimmerman was traded to the New York Giants. He led the NL in RBI that season, with 83. He led the NL in RBI again in 1917, with 100. The Giants then lost the 1917 World Series, and Zimmerman played poorly, batting.120. Zimmerman became known for an infamous play in the decisive sixth game of the series. In the fourth inning, the game was scoreless when Eddie Collins of the Chicago White Sox was caught between third base and home plate. CatcherBill Rariden ran up the line to start a rundown, expecting pitcherRube Benton or first basemanWalter Holke to cover the plate. However, neither of them moved, and Collins blew past Rariden to score the series-winning run. With no one covering the plate, third baseman Zimmerman was forced to chase Collins, pawing helplessly in the air with the ball in a futile attempt to tag him. Zimmerman was long blamed for losing the game, although Giants manager John McGraw blamed Benton and Holke for failing to cover the plate. The play was actually quite close, as action photos show Zimmerman leaping over the sliding Collins. After a lot of public criticism for his World Series performance, Zimmerman had a mediocre season in 1918. In 1919, the Giants acquired Hal Chase, and he and Zimmerman tried to get other players to help them throw games during the season. Zimmerman's actions got him kicked off the team in September 1919, and he never played in organized baseball again. Based on testimony by McGraw during the Black Sox Scandal hearings in the early 1920s, Zimmerman and Chase were both indicted for bribery. Zimmerman denied McGraw's accusations, and neither he nor Chase was ever proven to be directly connected to the Black Sox, but based on a long-term pattern of corruption both were permanently banned from baseball by the Commissioner of Baseball, Kenesaw Mountain Landis. According to some historians, Zimmerman had been informally banned after the Giants released him. In 1,456 MLB games played, Zimmerman batted.295 with 695 runs scored, 275 doubles, 105 triples, 58 home runs, 799 RBI, 175 stolen bases, a.331 on-base percentage, and a.419 slugging percentage in 13 seasons. In 12 World Series games, he hit.163 with 2 RBI. In the 2001 book The New Bill James Historical Baseball Abstract, Bill James ranked Zimmerman as the 51st greatest third baseman of all-time. Zimmerman died in New York City in 1969. He is buried in Woodlawn Cemetery.