LOS ANGELES -- The late Hall of Famer Roy Campanella and likely Hall of Famer Mike Piazza are locked in an epic battle in fan voting for the greatest season by a catcher in Dodgers history, separated by only 400 votes in MLB.com's All-Time 9s balloting.

More than 4.1 million votes have been cast since the 9/9/09 debut of the "All-Time 9s," a platform for fans to debate the greatest single-season performances for all 30 Major League franchises. The voting marks the start of MLB.com's Lineup Card campaign, a gathering place for the posting and never-ending discussion of the greatest past and present lineups.

The initial question asked fans to select a dream lineup in franchise history, including the selection of the best-hitting pitcher, based on their best single offensive season.

Here's a look at how the Dodgers' closest races are shaping up:

• Campanella and Piazza represent the most hotly contested voting, as they will go down in history as two of the greatest at their position.

• Despite an MVP season, first baseman Steve Garvey will need a serious surge to catch Gil Hodges.

• In the outfield, Hall of Famer Duke Snider and Tommy Davis are firmly entrenched, but the final spot is up for grabs among Babe Herman, Shawn Green, Gary Sheffield and Matt Kemp. Only 1,400 votes separate the four.

• At shortstop, 1962 MVP Maury Wills is fending off Hall of Famer Pee Wee Reese and incumbent Rafael Furcal.

• At third base, Adrian Beltre's epic contract season of 2004 has him leading the hot corner competition ahead of Ron Cey and Pedro Guerrero.

• For best-hitting starting pitcher, there's another close competition among former teammates, Don Newcombe and Don Drysdale. Newcombe holds a 1,300-vote lead off the strength of an amazing 1955 season when he hit .359 with seven homers and 23 RBIs.