 The Dodgers did not envision a future with him and did not pursue a contract due to his commitment to Princeton and future military obligation.Sisler was signed by the Boston Red Sox of the American League (AL) after his time with Princeton, and began his professional baseball career at the age of 21 in 1953 for the Albany Senators in the class-A Eastern League.He pitched in 21 games that season, 20 as their starting pitcher; he had a 12–7 win–loss record, an ERA of 2.60 in 135 innings pitched.