Seamus Power into top five at Torrey Pines as Brooks Koepka makes subdued return to PGA Tour

Rose carded 10 unanswered birdies as the 45-year-old claimed a one-shot lead over American Justin Lower.

Justin Rose leads in North Carolina (Caroline Brehman/AP)

Seamus Power stormed into the top five at the Farmers Insurance Open after a seven-under-par 65 at Torrey Pines.

The Waterford native clinched eight birdies finishing with three in a row to sit tied-fifth overnight.