Mezue ahịrịokwu na-esonụ: Harrington nọrọ ihe karịrị izu 300 n'elu ụwa n'etiti 2001 na 2010. wee nweta ọkwa kachasị mma nke atọ mgbe mmeri nke abụọ ya na Open Championship. O sokwa bọọlụ Europe n'asọmpi Ryder Cup isii; o meriri n'afọ 1999 na 1999
2008, ma merie na 2002, 2004, 2006 na 2010. O meriela asọmpi par-3 na Augusta National, nke a na-eme ụbọchị tupu Masters, na 2003 (tie), 2004 na 2012 (tie).