Christison signed with the Pelicans on May 21, 2008, batting .290 in his first year of service. In 2009, Christison had 73 hits on the campaign which was a career high. Three seasons ago Christison played for the River City Rascals of the Frontier League and the Fort Worth Cats of the American Association. Before turning pro, Christison played college ball at Fort Hays State University. In 2005, Christison was named a NCAA Division 2 All American as well as being named to the All Rocky Mountain Athletic Conference 1st team and 1st team All RMAC Tournament team.