Orwin Ham's Matches In The United-states-amateur-championship

1997 United States Amateur Championship

Quarter-final

Peter Ong

5 (9) 3

Last 16

Tom Kollins

4 (7) 2

1996 United States Amateur Championship

Quarter-final

Piya Potavan

4 (7) 3

1995 United States Amateur Championship

Final

Tang Hoa

5 (9) 1

Semi-final

Orwin Ham

4 (7) 3

Quarter-final

Orwin Ham

4 (7) 1

Last 16

Orwin Ham

4 (7) 2

1994 United States Amateur Championship

Quarter-final

David Yao

4 (7) 0

Last 16

Orwin Ham

4 (7) 0