List of discus throw national champions (men)
United States
Table:
1980: Mac Wilkins

1981: Ben Plucknett

1982: Luis Delís (CUB)

1983: John Powell

1984: John Powell

1985: John Powell

1986: John Powell

1987: John Powell

1988: Mac Wilkins

1989: Kamy Keshmiri

1990: Kamy Keshmiri

1991: Anthony Washington

1992: Kamy Keshmiri

1993: Anthony Washington

1994: Mike Gravelle

1995: Mike Buncic

1996: Anthony Washington

1997: John Godina

1998: John Godina

1999: Anthony Washington

2000: Adam Setliff

2001: Adam Setliff

2002: Adam Setliff

2003: Carl Brown

2004: Jarred Rome

2005: Ian Waltz

2006: Ian Waltz

2007: Michael Robertson

2008: Ian Waltz

2009: Casey Malone

2010: Casey Malone

Studying the table information on 'List of discus throw national champions (men)', section 'United States', formulate a single-sentence overview of the highlighted cells and format it within the following JSON object {"answer": "YOUR ANSWER"}.