He made his pro debut against Bobby Riggs on December 26 , 1947 at Madison Square Garden .
Kramer turned professional in November 1947 , signing a $50,000 per year contract with promoter Jack Harris .
Kramer made Kramer 's pro debut against Bobby Riggs on December 26 , 1947 at Madison Square Garden .
Kramer turned professional in November 1947 , signing a $50,000 per year contract with promoter Jack Harris .