Sweden's Henrik Stenson shot a six-under-par 65 to lead the Deutsche Bank Open after three rounds in Boston.
Stenson eagled the par-three fourth in a five-under outward nine and birdied the last after eight consecutive pars coming home.
In-form Stenson followed up his runner-up finish in The Barclays last week by posting a bogey-free third round and wipe out a five-shot deficit on the leader at the halfway stage.
The 39-year-old won in Boston two years ago, and then dominated at the Tour Championship to capture the FedEx Cup and the $10m bonus.