|1955 Kansas City Athletics|
|Major League affiliations|
(Merle Harmon, Larry Ray)
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The 1955 Kansas City Athletics season was the 55th season for the franchise in MLB's American League, and the first in Kansas City after playing the previous 54 in Philadelphia. The team won 63 games – only the fifth time in 20 years that they won more than 60 games – and lost 91, finishing sixth in the American League, 33 games behind the AL Champion New York Yankees.
In 1954, the Mack family decided to sell the Philadelphia Athletics. Charlie Finley made an offer to purchase the team, but was refused. Clint Murchison also made an offer to purchase the team with plans to relocate to Southern California, but was also refused. On October 12, 1954, the owners approved the sale of the Athletics to Chicago businessman Arnold Johnson, who moved the team from Philadelphia to Kansas City for the 1955 season. Finley would later buy the A's from Johnson's estate in 1960. Murchison's son, Clint Jr., would later become one of the founders of the National Football League's Dallas Cowboys franchise in 1960.
In 1955, the new Kansas City Athletics drew 1,393,054 to Municipal Stadium.
The A's and Philadelphia Phillies had played a Philadelphia City Series since 1903. The Kansas City A's returned to Philadelphia at the end of spring training in 1955, and the teams played two games. The A's beat the Phillies in the second game, 10–2, at Wilmington Park, home of the original Wilmington Blue Rocks. Both games were played at Wilmington Park, Wilmington, Delaware, on April 9 and April 10, 1955, immediately prior to the start of the regular season.
The first game in Kansas City's Major League history was played at home at Municipal Stadium on Tuesday, April 12, 1955, before 32,147 fans. Facing the Detroit Tigers, the Athletics broke a 2–2 deadlock in the sixth inning with a three-run rally keyed by pinch hitter Don Bollweg's two-run single, and went on to win, 6–2. The A's other batting star was center fielder Bill Wilson, who collected three hits and a base on balls, scoring three runs, in four plate appearances; one of his hits was the first home run in Kansas City MLB annals, a solo blast in the eighth inning. Left-hander Alex Kellner got the victory, while former Cincinnati Reds star Ewell Blackwell pitched three scoreless innings in relief for the save.
|New York Yankees||96||58||0.623||—||52–25||44–33|
|Chicago White Sox||91||63||0.591||5||49–28||42–35|
|Boston Red Sox||84||70||0.545||12||47–31||37–39|
|Kansas City Athletics||63||91||0.409||33||33–43||30–48|
1955 American League Records
Sources:        
|1955 Kansas City Athletics|
|= Indicates team leader|
Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in
Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in
Note: G = Games played; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts
Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts
|Ozzie Van Brabant||2||0||0||0||18.00||1|
See also: Minor League Baseball
|AAA||Columbus Jets||International League||Nick Cullop|
|A||Savannah Athletics||Sally League||Clyde Kluttz|
|B||Lancaster Red Roses||Piedmont League||Hank Biasatti|
|C||Hot Springs Bathers||Cotton States League||Joe Lutz and Mickey O'Neil|
|C||Burlington A's||Provincial League||Vince Plumbo|
|D||Welch Miners/Marion A's||Appalachian League||Herb Mancini|
|D||Seminole Oilers||Sooner State League||Charles Hopkins and Al Evans|
LEAGUE CHAMPIONS: Lancaster
Welch franchise transferred to Marion and renamed, July 14, 1955