He had a 13-year career in MLB for the New York Giants (1941–43, 1946–49, and 1955), Boston / Milwaukee Braves (1950–53), and Pittsburgh Pirates (1954–55).

Harold Ribalow in his book The Jew in American Sports referred to Gordon as the "Solid Man".

[2] At Milford in 1938, Gordon was put at third base, an unfamiliar position, but responded with a .352 average and 25 homers, while playing every game.

[2] Gordon's first full year in the majors came in 1943; he hit only .251, but with 32 strikeouts and 43 walks showed discipline at the plate.

[6] Bill James listed Gordon as a player who may have lost a shot at the Hall of Fame due to World War II, writing "there are guys in the Hall of Fame who didn't have careers as good as Gordon's, and Sid missed two full seasons due to the war."

[1] Giant manager Mel Ott had put together a one-dimensional ball club built around a lot of sluggers with little speed.

He started out by moving my right-hand grip on the bat around a little and he opened up my stance – I now put my left foot toward third when I hit.

[7] The Giants held "Sid Gordon Day" at the Polo Grounds, and he received a new car, golf clubs, and a set of luggage.

[9] July 3 was also dubbed "Sid Gordon Day" at Ebbets Field, marking a rare honor for a visiting player.

In December 1949 he traded Willard Marshall, Red Webb, Buddy Kerr, and nice guy Gordon to the Boston Braves for Alvin Dark and Eddie Stanky.

The deal having been consummated, Giants owner Horace Stoneham told him that "it broke my heart to let you go,"[11] and sent Gordon a check for $2,500 as a token of his respect for the popular slugger.

[7] On August 11 he hit a home run in a doubleheader, the first major league games to be telecast in color.

[7] In December 1953 he was traded by the Braves with Larry Lasalle, Fred Walters, Curt Raydon, Sam Jethroe, Max Surkont, and cash to the Pittsburgh Pirates for infielder Danny O'Connell.

[12] It was the only six-for-one trade in major league history, and was surpassed years later only by the 7-for-1 deal that sent Vida Blue from Oakland to San Francisco in 1978.

[7] Through 2010, he was third in career home runs (behind Shawn Green), fourth in RBIs (behind Buddy Myer), and sixth in hits (behind Brad Ausmus) among all-time Jewish major league baseball players.

[13] A well-liked and highly regarded person wherever he traveled, Gordon was nevertheless subjected to a stark case of anti-Semitism.

Gordon for his part took the high road, ignoring the antisemitic remarks and forcing the bigots to admire him.