Poston, 33, squandered his benefit because of 4 bogeys within the first 13 holes, with England’s Tommy Fleetwood briefly taking the lead on the fifteenth.
Nonetheless, Fleetwood bogeyed the seventeenth and completed in a tie for fourth with American Sam Burns on 10 beneath par, whereas American Wyndham Clark, who shot a 67, was third.
American world primary Scottie Scheffler, aiming to equal Tiger Woods’ document of successful three consecutive titles, completed twelfth alongside England’s Justin Rose and Northern Eire’s Rory McIlroy.
Play was suspended on Saturday due to thunderstorms, with the third spherical concluding on Sunday morning.
Poston, who was tied at 9 beneath with Gerard on the sixth inexperienced when play was halted, moved to 12 beneath, with Gerard 4 pictures again.
Burns was third on seven beneath, with Fleetwood and Clark – on six beneath – finishing the highest 5 after three rounds.
