Greatest third basemen in National League history by team

Atlanta Braves: Eddie Mathews (1952-66) and Chipper Jones (1993-2012)
Miami Marlins: Mike Lowell (1999-2005)
New York Mets: David Wright (2004-present)
Philadelphia Phillies: Mike Schmidt (1972-89)
Washington Nationals: Ryan Zimmerman (2005-present)
Chicago Cubs: Ron Santo (1960-74)
Cincinnati Reds: Pete Rose (1963-78, 1984-6)
Milwaukee Brewers:Paul Molitor (1978-92)
Pittsburgh Pirates: Pie Traynor (1920-37)
St Louis Cardinals: Ken Boyer (1955-65)
Arizona Diamondbacks: Matt Williams (1998-2003)
San Diego Padres: Phil Nevin (1999-2005)
San Francisco Giants: Freddie Lindstrom (1924-32)
Los Angeles Dodgers: Ron Cey (1971-82)
Colorado Rockies: Vinnie Castilla (1993-99, 2004, 2006)

Top 10 Third Basemen of All Time

#1 is Mike Schmidt. These are in no particular order...

Wade Boggs

George Brett

Mike Schmidt

George Kell

Eddie Mathews

Brooks Robinson

Pie Traynor

Alex Rodriguez

Chipper Jones

Pete Rose