Oak Hill offering stern test as early starters chase leader Bryson DeChambeau

Bryson DeChambeau held a one-shot lead after the completion of the delayed first round at Oak Hill (Eric Gay/AP)

Oak Hill continued to provide a stiff test as the 105th US PGA Championship got back on track on Friday.

A frost delay of almost two hours meant the first round had not been completed on schedule on Thursday, with 11 groups still out on the course when play was suspended at 8.30pm local time.