Question: The Brooklyn Dodgers are noted for signing which African-American second baseman?
Context: Roy Thomas Hartsfield (October 25, 1925 – January 15, 2011) was a second baseman and manager in Major League Baseball; his MLB playing and managing careers each lasted three years.  Hartsfield played his entire major-league career with the Boston Braves (now the Atlanta Braves) from 1950 to 1952.  He was then traded to the Brooklyn Dodgers for outfielder Andy Pafko.  Hartsfield spent the next 19 years in the Dodgers organization as a minor league player and manager and major league coach.  In the latter role, he worked under Los Angeles skipper Walter Alston for three seasons. The Brooklyn Dodgers were an American baseball team that was active in the major leagues from 1884 until 1957, after which the club moved to Los Angeles, where it continued its history as the Los Angeles Dodgers.  The team's name derived from the reputed skill of Brooklyn residents at evading the city's trolley streetcar network.  The Dodgers played in two stadiums in South Brooklyn, each named Washington Park, and at Eastern Park in the neighborhood of Brownsville before moving to Ebbets Field in the neighborhood of Flatbush in 1913.  The team is noted for signing Jackie Robinson in 1947 as the first black player in the modern major leagues. Jack Roosevelt Robinson (January 31, 1919 – October 24, 1972) was an American professional baseball second baseman who became the first African American to play in Major League Baseball (MLB) in the modern era.  Robinson broke the baseball color line when the Brooklyn Dodgers started him at first base on April 15, 1947.  When the Dodgers signed Robinson, they heralded the end of racial segregation in professional baseball that had relegated black players to the Negro leagues since the 1880s.  Robinson was inducted into the Baseball Hall of Fame in 1962. Anthony Francis "Tony" Cuccinello (November 8, 1907 – September 21, 1995) was an American professional baseball second baseman and third baseman.  He played in Major League Baseball (MLB) for the Cincinnati Reds, Brooklyn Dodgers, Boston Bees, New York Giants, Boston Braves, and Chicago White Sox between 1930 and 1945.  He was the older brother and uncle of former major league players Al Cuccinello and Sam Mele.  His surname was pronounced "coo-chi-NELL-oh". Donald Raymond Ross (July 16, 1914 – April 4, 1996) was an American professional baseball third baseman.  He played in Major League Baseball (MLB) for the Detroit Tigers, Brooklyn Dodgers, and Cleveland Indians.  Ross played in 498 major league games, 261 as a third baseman, 115 as an outfielder, 20 as a shortstop and 7 as a second baseman.  Ross had a career batting average of .262 and an on-base percentage of .338.  He had 390 career hits, 129 runs scored, 162 RBIs, 166 bases on balls, and 79 extra base hits. Alexander Sebastian Campanis (born Alessandro Campani, November 2, 1916 – June 21, 1998) was an American executive in Major League Baseball.  He had a brief Major League career as a second baseman, playing for both the Brooklyn Dodgers and the Montreal Royals, the Dodgers' minor-league team.  Campanis is most famous for his position as general manager of the Los Angeles Dodgers from 1968 to 1987, from which he was fired on April 8, 1987, as a result of controversial remarks regarding blacks in baseball made during an interview on "Nightline" two days earlier.  He was the first Greek player in MLB history The First is a musical with a book by critic Joel Siegel.  The music was composed by Robert Brush, and Martin Charnin wrote the lyrics.  The show is based on the life of Brooklyn Dodgers second baseman Jackie Robinson, the first African-American to play major league baseball in the 20th century. Born in Orleans, Indiana, Richardson threw and batted right-handed.  A second baseman, third baseman and outfielder, he stood 5 ft tall and weighed 187 lb .  Both of his MLB stints occurred in early-season trials; he had one single (off Charlie Wagner of the Boston Red Sox) in 15 at bats for the 1942 Athletics, and three hits (including his double off Kirby Higbe of the Brooklyn Dodgers) in 20 at bats for the 1946 Phillies. Thomas "Toots" Sampson (August 31, 1912 – January 24, 2002) was an African-American second baseman in the Negro Leagues.  He played from 1938 to 1948, playing mostly with the Birmingham Black Barons.  During the 1944 Negro League World Series, Sampson was injured in a car accident.  Fellow players John Britton, Pepper Bassett, and Leandy Young were also in the car, but sustained minor injuries.  Sampson's right leg was broken, and he missed the remainder of the Series.  In 1946 and 1947, he served as the manager of the Black Barons, before being replaced by Piper Davis.  In 1948, Sampson discovered future Baseball Hall of Famer Willie Mays, which led to Mays signing with the Black Barons. The Brooklyn Dodgers were an American football team that played in the National Football League from 1930 to 1943, and in 1944 as the Brooklyn Tigers.  The team played its home games at Ebbets Field of the baseball National League's team, the Brooklyn Dodgers.  In 1945, because of financial difficulties and the increasing scarcity of major league-level players because of the war-time defense requirements at the height of World War II, the team was merged with the Boston Yanks and were known as the Yanks for that season.  This old NFL franchise was not related to the earlier (second incarnation) American Football League II with a franchise that played as the Brooklyn Tigers for the first half of the 1936 season before moving to Rochester, New York and playing as the Rochester Tigers.  Another NFL team that played in the Brooklyn borough was the Brooklyn Lions (which became the Brooklyn Horsemen after merging with a team from an earlier first incarnation AFL of the same name) in 1926.  Later co-owner and partner Dan Topping (1912–1974), pulled the Tigers team out of the old NFL in 1946 and placed it in the newly established rival professional league – the All-America Football Conference, which shortly lasted until 1949 until several stronger teams from the AAFC merged with and entered a reorganized NFL in 1950.  It lasted until 1970 with the NFL-AFL (third) merger following the establishment of the first "Super Bowl" inter-league national championship game three years before with the old NFL champions playing the victors of the latest rival fourth incarnation of the American Football League IV, formed in 1960 (now the American Football Conference (AFC).
Answer: Jack Roosevelt Robinson