Kammala jumla mai zuwa: Harrington ya shafe sama da makonni 300 a cikin manyan goma na duniya tsakanin 2001 da 2010. kuma ya sami mafi kyawun matsayi na uku bayan nasararsa ta biyu a gasar Open Championship. Ya kuma taka leda a Turai a gasar cin kofin Ryder guda shida; rasa a 1999 da 1999
2008, amma ya ci nasara a 2002, 2004, 2006 da 2010. Ya kuma lashe gasar par-3 a Augusta National, wanda aka gudanar a ranar kafin Masters, a 2003 (daura), 2004 da 2012 (daura).