Justin Thomas took the lead after scoring a second straight 67, while world number two Jon Rahm struggled at the US PGA Championship.
Exeter are poised to miss out on the Gallagher Premiership play-offs for the first time since 2015 following Friday's defeat to Bristol, with the hosts running in six tries including a brace for Charles Piutau to give all their departing players, including 38-year-old prop John Afoa, a perfect send-off at home.
WTA also has harsh words for Wimbledon after stripping grass-court major of ranking points.
The England seamer’s three-wicket burst left the contest delicately balanced at the halfway stage.