Christensen hit a combined 14 home runs between London & Joliet in 2012. The 14 home runs were more than his two previous seasons in affiliated ball combined. It was the second highest home run count of his career as he hit 18 home runs for Asheville of the South Atlantic League in 2009. Signed by the Slammers on July 22, 2012. Started the 2012 season with the defunct London Rippers. Selected by the Colorado Rockies in the second round of the 2006 First-Year Player Draft out of Stoneman Douglas High School in Parkland, Florida. Spent six years in the Colorado organization, advancing as far as High-A.