Harrington rues missed opportunity in Boston
However, it was another bitter-sweet occasion for the 38-year-old Irishman, who must wonder when he will win again, having finished second in the WGC-Bridgestone Invitational and the Barclays Championship, 10th in the US PGA after a quintuple bogey eight in the last round and now fourth, all in the past four weeks.
Two bad errors at the 10th and 12th cost him dearly in Boston where he entered the back nine with a one-shot advantage over the field having completed the outward journey in an impeccable four under 32.