 | Notable Events in American Association History |
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| 1902 |
The American Association begins play with teams in Columbus, OH; Indianapolis, IN; Kansas City, MO; Louisville, KY; Milwaukee, WI; Minneapolis, MN; St. Paul, MN; & Toledo, OH. |
| 1904 |
The AA's St. Paul club loses to Buffalo in the first Junior World Series. |
| 1904 |
George Stone of Milwaukee hits .405 - the only AA player to ever top the .400 mark. |
| 1914 |
Cleveland replaces Toledo as an AA member. |
| 1916 |
Toledo returns to the AA, displacing Cleveland. |
| 1918 |
The Columbus club begins a now-common practice by playing the National Anthem prior to games. |
| 1918 |
July 21 - The American Association suspends operations in response to the government's work-or-fight edict during World War I. |
| 1920 |
The St. Paul club, led by AA batting champ Joe Rapp, sets a League record with 115 victories. |
| 1933 |
Minneapolis' Joe Hauser sets the League record with 69 home runs. |
| 1938 |
19-year-old Ted Williams wins the Triple Crown, leading the AA with a .366 average, 43 HR, and 142 RBI. |
| 1947 |
St. Paul catcher Roy Campanella becomes the first African-American to play in the AA. |
| 1952 |
The AA's membership is altered for the first time since 1916 as Toledo folds during the season and moves to Charleston, WV. |
| 1953 |
The AL's Boston Braves move to Milwaukee, forcing the AA to return to Toledo. |
| 1954 |
Indianapolis' Herb Score sets an American Association record by striking out 330 opposing hitters. |
| 1955 |
Columbus and Kansas City leave the Association and are replaced by Omaha and Denver. |
| 1959 |
The AA expands to 10 teams for the first time, adding clubs in Dallas, Fort Worth, and Houston as Wichita drops out of the circuit. |
| 1962 |
Houston leaves the AA for the National League and is replaced by Oklahoma City. |
| 1963 |
The AA is disbanded as Indianapolis and Little Rock join the IL and Denver, Oklahoma City, and Dallas-Fort Worth are transferred to the PCL. |
| 1969 |
The American Association returns as a Triple-A League with clubs in Indianapolis, Denver, Oklahoma City, Tulsa, Omaha, and Des Moines (Iowa). The League does not hold a playoff series. |
| 1970 |
Evansville and Wichita join the AA, bumping the loop's membership to 8 clubs. |
| 1982 |
The Springfield franchise moves to Louisville. |
| 1983 |
The Louisville Redbirds become the first Minor League club to break the 1 million attendance barrier, drawing 1,052,438 fans to Cardinal Stadium. |
| 1984 |
Louisville's Vince Coleman sets a League record with 101 stolen bases. He would be named NL Rookie-of-the-Year the next season with St. Louis. |
| 1985 |
Buffalo returns to the Triple-A classification when the Wichita franchise relocates. |
| 1988 |
AA begins interlocking schedule with International League. The two Leagues together formed the Triple-A Alliance with playoff champions participating in Triple-A Classic Playoff series. |
| 1988 |
Buffalo hosts the first Triple-A All-Star Game. The AL affiliates defeat the NL affiliates, 2-1. |
| 1989 |
Indianapolis wins their fourth straight American Association championship. |
| 1990 |
Nashville left-hander Chris Hammond leads the AA with 15 victories, 149 strikeouts, and a 2.17 ERA to win the pitching Triple Crown. |
| 1990 |
In a one-game playoff following the regular season, Nashville defeats Buffalo 4-3 in 18 innings (over 5 hours) to advance to the AA Championship Series. |
| 1991 |
Triple-A Alliance is dissolved as AA returns to 8-team League for 1992 season. |
| 1991 |
Buffalo sets the Minor League Single-Season Attendance mark as 1,240,951 fans watch Bisons games at Pilot Field |
| 1993 |
The Denver territory is elevated to the Major Leagues and is replaced in the AA by New Orleans. |
| 1997 |
AA Directors vote to disband League following season. Buffalo, Indianapolis & Louisville go to IL; Iowa, Nashville, New Orleans, Oklahoma City & Omaha join PCL. |
| 1997 |
Buffalo wins final American Association Championship, defeating Iowa to claim the Title. |