He pitched for the
Brooklyn Dodgers,
Detroit Tigers, and
Cleveland Indians. Eisenstat was 19 years old when he broke into the big leagues on May 19, 1935, with the Brooklyn Dodgers, the third-youngest player in the National League. In his Major League debut, he gave up 5 runs over 2 innings in a 9–6 loss to the Pittsburgh Pirates. On October 4, 1937, he was granted
free agency and signed with the Detroit Tigers. Eisenstat is best known for, while pitching for the Detroit Tigers in the first game of a doubleheader on the last day of the 1938 season, beating
Bob Feller of the Cleveland Indians 4–1 despite Feller setting the Major League record for most strikeouts in a game (18). Earlier that season, he won both ends of a
doubleheader in relief against the Philadelphia Athletics while teammate
Hank Greenberg hit two home runs, causing their Tigers Manager,
Mickey Cochrane, to warn the two of them to stay in their rooms that night because "the Jews in Detroit are going crazy." Eisenstat is recognized as the only pitcher in Major League history to receive credit for two wins in one day: one as a starter and one as a relief pitcher. In 1938 his four saves were sixth-most in the National League. ==Later life==