From early in 1939, at the age of eighteen, through his final tournament match fourteen years later, Freeman was undefeated in badminton singles competition.

[3] Displaying his characteristic quickness, agility, and shot-making precision, Freeman won the prestigious All-England Championship on his only try (1949) and remains the sole American to win the men's singles there.

[4] In this one-time-only badminton stint in Europe he also won Thomas Cup singles matches against eventual champion Malaya, and captured the Danish Open.

He won the four tournaments that he entered which concluded with the U.S. National Championships in Boston, and a victory in the same hall where he had last lost a singles match fourteen years earlier.

Junior Tennis Championship in 1938, defeating Welby Van Horn in the final, and with Bill Talbert was the runner-up in U.S. men's doubles in 1943.