Hal Schumacher played his entire MLB career with the New York Giants, where he flirted with being an ace for a brief period.

Schumacher debuted in 1931 but began a three-year run in 1933, where he was a massive part of New York's success.  An All-Star in 1933 and 1935, Schumacher went 19-12 with a 2.16 ERA while leading the NL in H/9 (6.9), and he would help lead the Giants to a World Series win, gaining a decision in the Fall Classic.  It was his only World Series Title, but not his only good year. 

In the year between his two All-Stars (1934), Schumacher had what could be considered his best regular season, at least in terms of Wins (23) and MVP voting (9^th).  Following 1935, Schumacher was a middle-of-the-road Starter, never winning more than 13 Games, though he was far from a liability.  He left the Majors for the American Military in World War II, missing three years (1943-45), and returned for one last season in 1946.

Overall, Schumacher had a record of 158-121 with a 3.36 ERA.