Christopher Edwin Duncan (May 5, 1981 – September 6, 2019) was an American professional baseball left fielder and first baseman.

[1] The St. Louis Cardinals selected Duncan in the first round (46th overall) in the 1999 Major League Baseball draft as a supplemental pick for loss of free agent Delino DeShields to the Baltimore Orioles.

[2][3] Duncan made his professional debut with the Johnson City Cardinals of the Appalachian League shortly after his 1999 signing.

[12] Duncan was recalled in June to fill the hole at first base, which was left open after Albert Pujols went on the disabled list for a period of 15 days.

On August 2, it was reported that Duncan would miss the rest of the 2008 season after having surgery to address a herniated cervical disk in his neck.

[14] Duncan successfully recovered from the surgery that ended his 2008 season, however, hit only .227, with five home runs and 32 RBIs in 260 at bats with the Cardinals.

[17] On January 19, 2010, Duncan signed a minor league contract with the Washington Nationals with an invitation to spring training.

He played for the Syracuse Chiefs of the Triple-A International League in 2010,[18] his final professional season, batting .191 with seven home runs in 82 games.

On January 4, 2012, he was replaced by former Fast Lane commentator Bob Ramsey, making the show "Stully and Rammer", while he moved to co-host "The Fast Lane" with Randy Karraker and former St. Louis Rams defensive tackle and Super Bowl XXXIV champion D'Marco Farr.

[20] On January 9, 2019, it was announced that Duncan was taking a permanent leave of absence from his ESPN radio show to continue his fight against glioblastoma.