<prompt> Pedzisa mutsara unotevera: Geiger akatanga kutonga muna 1988. Akava United States Soccer Federation National Referee muna 2003 uye akatonga muMajor League Soccer kubva 2004 kusvika 2018. Akave mutongi mumakwikwi eCONCACAF kubvira paakave mutongi weFIFA muna2008, uye akatonga Gold Cup nemamwe makwikwi epasi rese nemitambo. Geiger akasarudzwa nokuda kwe  <response>: CONCACAF U-20 Championship muna 2011, apo akatonga pakupedzisira. 