W Clark carded a five-under 65 to reach ‑17 and extend his lead to five shots at the BMW Championship at Bellerive Country Club. The American double‑bogeyed the opening hole but responded with two birdies and an eagle on the eighth, then birdied four of the next five holes before a final‑hole bogey.

R Mc Ilroy (NI) and P Cantlay sit joint second on ‑12. Mc Ilroy, who lost his first‑round lead with a 69 on Friday, birdied four of his last six holes for a 65, while Cantlay posted a 66.

C Gotterup and G Woodland are tied fourth at ‑11. S J Im is ‑9, while a group including R Hisatsune, E Cole and others sit at ‑8. R Mac Intyre is the leading Scot at ‑5; J Rose slipped to ‑1 after a 73 and T Fleetwood is +2 following a 74.

Clark’s five‑stroke cushion sets up a commanding position heading into Sunday’s final round.