Rory McIlroy: Major win at Oakmont would be ‘my biggest accomplishment’

The overriding emotion this week is one of "trepidation".

The overriding emotion this week may be one of "trepidation", but Rory McIlroy believes winning the US Open at Oakmont could be the biggest accomplishment of his career.

McIlroy won his first major title in the 2011 US Open at Congressional, taking advantage of a rain-softened course to blitz the field by eight shots with a record total of 16 under par.