Rory McIlroy in pursuit of US Open leader Bryson DeChambeau

Rory McIlroy was in the hunt (Matt York/AP)

Rory McIlroy had an overdue fifth major title within his sights after eating into his overnight deficit in the final round of the US Open at Pinehurst.

Starting the day three shots behind Bryson DeChambeau, McIlroy made the ideal start with a birdie from 20 feet on the first and found himself just a shot behind when DeChambeau bogeyed the fourth.