|Date of birth||June 5, 1991|
|Place of birth||Overland Park, Kansas, United States|
|Height||1.75 m (5 ft 9 in)|
|Swope Park Rangers|
|2007–2009||Kansas City Wizards|
|2009–2012||San Diego Toreros|
|2013–2014||Sporting Kansas City||0||(0)|
|2013||→ Orlando City (loan)||21||(1)|
|2014||→ Oklahoma City Energy (loan)||13||(0)|
|2015||Oklahoma City Energy||19||(0)|
|2016–||Swope Park Rangers||30||(2)|
|* Senior club appearances and goals counted for the domestic league only and correct as of October 6, 2016.
Duke spent his entire college career at the University of San Diego. After making only two appearances in 2009, Duke made 17 appearances in his sophomore year in 2010 and tallied two assists on his way to being named All-WCC honorable mention. In 2011, he made 18 appearances and tallied four assists. In his senior year in 2012, Duke made 23 appearances and was named All-West Coast Conference Second Team despite finishing the year without a goal or an assist.
Shortly after signing with Kansas City, Duke was loaned out to USL Pro affiliate club Orlando City for the 2013 season along with teammates Dom Dwyer, Jon Kempin and Yann Songo'o. On March 17, 2014 he was assigned on loan to Oklahoma City Energy FC, before being recalled to the Sporting roster on June 4, 2014.
- "Christian Duke selected in MLS Supplemental Draft". San Diego Toreros. 22 January 2013. Retrieved 8 April 2013.
- Austin, Kurt (28 February 2013). "Sporting KC signs two to contracts". Sporting Kansas City. Retrieved 8 April 2013.
- Austin, Kurt (14 March 2013). "Sporting KC agrees to loan four players to USL PRO affiliate Orlando City SC". Sporting Kansas City. Retrieved 8 April 2013.
- "Sporting Kansas City Recalls Duke; Assigns Lopez to OKC". www.energyfc.com. Prodigal, LLC. June 4, 2014. Retrieved June 19, 2014.
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